Diopside: Mineral information, data and localities.

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Diopside

A valid IMA mineral species - grandfathered

This page kindly sponsored by Robert M. Hazen

Photos of Diopside (1830)

Diopside Gallery Search Photos of Diopside

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Diopside, etc.

Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania

Diopside, etc.

La Juanona Quarry, Antequera, Málaga, Andalusia, Spain

Diopside, etc.

Unnamed meta-evaporite occurrence, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan

Diopside, etc.

Farghamiru, Jurm District, Badakhshan, Afghanistan

Diopside, etc.

Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania

Diopside, etc.

La Juanona Quarry, Antequera, Málaga, Andalusia, Spain

Diopside, etc.

Unnamed meta-evaporite occurrence, Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan

Diopside, etc.

Farghamiru, Jurm District, Badakhshan, Afghanistan

Diopside, etc.

Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania

Diopside, etc.

La Juanona Quarry, Antequera, Málaga, Andalusia, Spain

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About DiopsideHide

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Formula:

CaMgSi₂O₆

Colour:

Light to dark green, blue, brown, colourless, snow white, grey, pale violet

Lustre:

Vitreous, Dull

Hardness:

5½ - 6½

Specific Gravity:

3.22 - 3.38

Crystal System:

Monoclinic

Member of:

Clinopyroxene Subgroup > Pyroxene Group

Name:

Named in 1806 by Rene Just Haüy from the Greek δις- for "double" (or even better for "twice") and όψις" (or "ὄψις" in ancient Greek) - for "appearance", in allusion to two possible orientations of the prism zone.
see also https://www.mindat.org/mesg-588879.html

Co-Type Localities:

ⓘ Piedmont, Italy
ⓘ Ala Valley, Lanzo Valleys, Metropolitan City of Turin, Piedmont, Italy

Pyroxene Group - Clinopyroxene Subgroup; see also the Diopside-Hedenbergite Series, and the Diopside-Johannsenite Series.

One of the most common members of the pyroxene group. Often occurs in metamorphosed limestones (marbles) as generally pale greenish to greyish green crystals, masses and blebs/grains associated with humite-group minerals, spinel, phlogopite, tremolite and grossular. Can also be pure white and not distinguishable from the enclosing carbonate. Often fluorescent bright powder blue.

May incorporate OH groups (e.g., Yang et al., 2015).

The Ca analogue of the CuMg-clinopyroxene ryabchikovite.

Compare UM2003-36-SiO:CaNa.

Visit gemdat.org for gemological information about Diopside.

Unique IdentifiersHide

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Mindat ID:

1294

Long-form identifier:

mindat:1:1:1294:8

GUID
(UUID V4):

38f92552-c590-4af0-ab3a-0dda7f30f8e8

Classification of DiopsideHide

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Diopside and its relation to other pyroxenes (after Morimoto et al., 1989)

Previous petrological nomenclature of clinopyroxenes from basaltic magmas (after Poldervaart & Hess, 1951)

IMA Classification of DiopsideHide

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IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

Strunz-mindat (2023):

9.DA.15

9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si₂O₆; pyroxene family

Dana 8th ed.:

65.1.3a.1

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2

Hey's CIM Ref.:

14.6.12

14 : Silicates not Containing Aluminum
6 : Silicates of Ca with alkali or Mg or both

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Symbol	Source	Reference
Di	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Di	Kretz (1983)	Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279.
Di	Siivolam & Schmid (2007)	Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download
Di	Whitney & Evans (2010)	Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371
Di	The Canadian Mineralogist (2019)	The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download
Di	Warr (2020)	Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30

Physical Properties of DiopsideHide

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Lustre:

Vitreous, Dull

Transparency:

Transparent, Opaque

Colour:

Light to dark green, blue, brown, colourless, snow white, grey, pale violet

Comment:

Variable colours are caused by trace to minor contents of Fe (common), Mn, Ti, V, Cr.

Streak:

White

Hardness:

5½ - 6½ on Mohs scale

Tenacity:

Brittle

Cleavage:

Distinct/Good
on {110}

Parting:

on {100} and probably {010}

Fracture:

Irregular/Uneven, Conchoidal

Density:

3.22 - 3.38 g/cm³ (Measured) 3.278 g/cm³ (Calculated)

Optical Data of DiopsideHide

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Type:

Biaxial (+)

RI values:

n_α = 1.663 - 1.699 n_β = 1.671 - 1.705 n_γ = 1.693 - 1.728

2V:

Measured: 58° to 63°, Calculated: 56° to 64°

Max Birefringence:

δ = 0.030

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

High

Dispersion:

weak to distinct r > v

Optical Extinction:

Y = b; Z ∧ c = -38° on (010); X ∧ a = -22°.

Chemistry of DiopsideHide

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Mindat Formula:

CaMgSi₂O₆

Elements listed:

Ca, Mg, O, Si - search for minerals with similar chemistry

Common Impurities:

Fe,V,Cr,Mn,Zn,Al,Ti,Na,K

Crystallography of DiopsideHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

B2/b

Setting:

C2/c

Cell Parameters:

a = 9.746 Å, b = 8.899 Å, c = 5.251 Å
β = 105.79°

Ratio:

a:b:c = 1.095 : 1 : 0.59

Unit Cell V:

438.23 Å³ (Calculated from Unit Cell)

Morphology:

Prismatic crystals with square cross sections.

Twinning:

Simple or multiple twins on {100} or {010} common.

Crystallographic forms of DiopsideHide

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Crystal Atlas:

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Diopside no.135 - Goldschmidt (1913-1926)

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Year	Locality	Pressure (GPa)	Temp (K)
0000340	Diopside	Cameron M, Sueno S, Prewitt C T, Papike J J (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite pyroxene American Mineralogist 58 594-618	1973		0	297
0000341	Diopside	Cameron M, Sueno S, Prewitt C T, Papike J J (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite pyroxene American Mineralogist 58 594-618	1973		0	673
0000342	Diopside	Cameron M, Sueno S, Prewitt C T, Papike J J (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite pyroxene American Mineralogist 58 594-618	1973		0	973
0000343	Diopside	Cameron M, Sueno S, Prewitt C T, Papike J J (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite pyroxene American Mineralogist 58 594-618	1973		0	1123
0000344	Diopside	Cameron M, Sueno S, Prewitt C T, Papike J J (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite pyroxene American Mineralogist 58 594-618	1973		0	1273
0000517	Diopside	Finger L W, Ohashi Y (1976) The thermal expansion of diopside to 800 C and a refinement of the crystal structure at 700 C American Mineralogist 61 303-310	1976		0	973
0000805	Diopside	Gordon W A, Peacor D R, Brown P E, Essene E J, Allard L F (1981) Exsolution relationships in a clinopyroxene of average composition Ca0.43Mn0.69Mg0.82Si2O6: X-ray diffraction and analytical electron microscopy American Mineralogist 66 127-141	1981		0	293
0000811	Diopside	Levien L, Prewitt C T (1981) High-pressure structural study of diopside pyroxene American Mineralogist 66 315-323	1981		0	293
0000812	Diopside	Levien L, Prewitt C T (1981) High-pressure structural study of diopside pyroxene American Mineralogist 66 315-323	1981		2.36	293
0000813	Diopside	Levien L, Prewitt C T (1981) High-pressure structural study of diopside pyroxene American Mineralogist 66 315-323	1981		3.52	293
0000814	Diopside	Levien L, Prewitt C T (1981) High-pressure structural study of diopside pyroxene American Mineralogist 66 315-323	1981		4.55	293
0000815	Diopside	Levien L, Prewitt C T (1981) High-pressure structural study of diopside pyroxene American Mineralogist 66 315-323	1981		5.3	293
0001333	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Crystal chemistry of synthetic pyroxenes on the join CaNiSi2O6-CaMgSi2O6 (diopside): A Rietveld refinement study sample Ni100, CaNiSi2O6 American Mineralogist 75 1274-1281	1990		0	293
0001334	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Crystal chemistry of synthetic pyroxenes on the join CaNiSi2O6-CaMgSi2O6 (diopside): A Rietveld refinement study sample Ni80, CaNi.74Mg.26Si2O6 American Mineralogist 75 1274-1281	1990		0	293
0001335	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Crystal chemistry of synthetic pyroxenes on the join CaNiSi2O6-CaMgSi2O6 (diopside): A Rietveld refinement study sample Ni50, CaNi.45Mg.55Si2O6 American Mineralogist 75 1274-1281	1990		0	293
0001336	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Crystal chemistry of synthetic pyroxenes on the join CaNiSi2O6-CaMgSi2O6 (diopside): A Rietveld refinement study sample Ni25, CaNi.22Mg.78Si2O6 American Mineralogist 75 1274-1281	1990		0	293
0001337	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Crystal chemistry of synthetic pyroxenes on the join CaNiSi2O6-CaMgSi2O6 (diopside): A Rietveld refinement study sample Ni0, CaMgSi2O6 American Mineralogist 75 1274-1281	1990		0	293
0001362	Diopside	Oberti R, Caporuscio F A (1991) Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SRV 4, Di90Jd05, diopside - jadeite join American Mineralogist 76 1141-1152	1991		0	293
0001363	Diopside	Oberti R, Caporuscio F A (1991) Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SBB 7P, Di78Jd18, diopside - jadeite join American Mineralogist 76 1141-1152	1991		0	293
0001364	Diopside	Oberti R, Caporuscio F A (1991) Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SBB 37, Di71Jd20, diopside - jadeite join American Mineralogist 76 1141-1152	1991		0	293
0001365	Diopside	Oberti R, Caporuscio F A (1991) Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SBB 34, Di62Jd24, diopside - jadeite join American Mineralogist 76 1141-1152	1991		0	293
0001366	Diopside	Oberti R, Caporuscio F A (1991) Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SBB 3H, Di64Jd26, diopside - jadeite join American Mineralogist 76 1141-1152	1991		0	293
0001367	Diopside	Oberti R, Caporuscio F A (1991) Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SBB 39, Di52Jd27, diopside - jadeite join American Mineralogist 76 1141-1152	1991		0	293
0001368	Diopside	Oberti R, Caporuscio F A (1991) Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SBB 25, Di55Jd30, diopside - jadeite join American Mineralogist 76 1141-1152	1991		0	293
0001369	Diopside	Oberti R, Caporuscio F A (1991) Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SBB 61, Di47Jd40, diopside - jadeite join American Mineralogist 76 1141-1152	1991		0	293
0001667	Diopside	Bertolo S, Nimis P, Dal Negro A (1994) Low-Ca augite from experimental alkali basalt at 18 kbar: Structural variation near the miscibility gap Atomic parameters from ICSD American Mineralogist 79 668-674	1994		0	293
0001796	Diopside	Harlow G E (1996) Structure refinement of a natural K-rich diopside: The effect of K on the average structure American Mineralogist 81 632-638	1996		0	293
0002807	Diopside	Secco L, Martignago F, Dal Negro A, Reznitskii L Z, Sklyarov E V (2002) Crystal chemistry of Cr-V-rich clinopyroxenes Sample 2 American Mineralogist 87 709-714	2002		0	293
0002810	Diopside	Secco L, Martignago F, Dal Negro A, Reznitskii L Z, Sklyarov E V (2002) Crystal chemistry of Cr-V-rich clinopyroxenes Sample 5 American Mineralogist 87 709-714	2002		0	293
0002811	Diopside	Secco L, Martignago F, Dal Negro A, Reznitskii L Z, Sklyarov E V (2002) Crystal chemistry of Cr-V-rich clinopyroxenes Sample 6 American Mineralogist 87 709-714	2002		0	293
0004146	Diopside	Bindi L, Downs R T, Harlow G E, Safonov O G, Litvin Y A, Perchuk L L, Uchida H, Menchetti S (2006) Compressibility of synthetic potassium-rich clinopyroxene: In situ high-pressure single-crystal X-ray study American Mineralogist 91 802-808	2006		0	293
0004147	Diopside	Bindi L, Downs R T, Harlow G E, Safonov O G, Litvin Y A, Perchuk L L, Uchida H, Menchetti S (2006) Compressibility of synthetic potassium-rich clinopyroxene: In situ high-pressure single-crystal X-ray study American Mineralogist 91 802-808	2006		0	293
0004148	Diopside	Bindi L, Downs R T, Harlow G E, Safonov O G, Litvin Y A, Perchuk L L, Uchida H, Menchetti S (2006) Compressibility of synthetic potassium-rich clinopyroxene: In situ high-pressure single-crystal X-ray study American Mineralogist 91 802-808	2006		0.46	293
0004149	Diopside	Bindi L, Downs R T, Harlow G E, Safonov O G, Litvin Y A, Perchuk L L, Uchida H, Menchetti S (2006) Compressibility of synthetic potassium-rich clinopyroxene: In situ high-pressure single-crystal X-ray study American Mineralogist 91 802-808	2006		2.45	293
0004150	Diopside	Bindi L, Downs R T, Harlow G E, Safonov O G, Litvin Y A, Perchuk L L, Uchida H, Menchetti S (2006) Compressibility of synthetic potassium-rich clinopyroxene: In situ high-pressure single-crystal X-ray study American Mineralogist 91 802-808	2006		5.36	293
0004151	Diopside	Bindi L, Downs R T, Harlow G E, Safonov O G, Litvin Y A, Perchuk L L, Uchida H, Menchetti S (2006) Compressibility of synthetic potassium-rich clinopyroxene: In situ high-pressure single-crystal X-ray study American Mineralogist 91 802-808	2006		8.11	293
0004152	Diopside	Bindi L, Downs R T, Harlow G E, Safonov O G, Litvin Y A, Perchuk L L, Uchida H, Menchetti S (2006) Compressibility of synthetic potassium-rich clinopyroxene: In situ high-pressure single-crystal X-ray study American Mineralogist 91 802-808	2006		9.72	293
0004495	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	0	293
0004496	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	0.13	293
0004497	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	2.32	293
0004498	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	4.22	293
0004499	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	5.11	293
0004500	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	7.08	293
0004501	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	8.01	293
0004502	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	8.88	293
0004503	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	9.5	293
0004504	Diopside	Thompson R M, Downs R T (2008) The crystal structure of diopside at pressure to 10 GPa American Mineralogist 93 177-186	2008	DeKalb, New York	10.16	293
0005234	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Evaluation of the Rietveld method for the characterization of fine-grained products of the mineral synthesis: the diopside-hedenbergite join The Canadian Mineralogist 28 93-109	1990		0	293
0005235	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Evaluation of the Rietveld method for the characterization of fine-grained products of the mineral synthesis: the diopside-hedenbergite join The Canadian Mineralogist 28 93-109	1990		0	293
0005236	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Evaluation of the Rietveld method for the characterization of fine-grained products of the mineral synthesis: the diopside-hedenbergite join The Canadian Mineralogist 28 93-109	1990		0	293
0005237	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Evaluation of the Rietveld method for the characterization of fine-grained products of the mineral synthesis: the diopside-hedenbergite join The Canadian Mineralogist 28 93-109	1990		0	293
0005238	Diopside	Raudsepp M, Hawthorne F C, Turnock A C (1990) Evaluation of the Rietveld method for the characterization of fine-grained products of the mineral synthesis: the diopside-hedenbergite join The Canadian Mineralogist 28 93-109	1990		0	293
0005384	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005385	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005386	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005387	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005388	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005389	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005390	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005391	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005392	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005393	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005394	Diopside	Liang J, Hawthorne F C (1994) Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene The Canadian Mineralogist 32 541-552	1994		0	293
0005645	Diopside	Prencipe M, Tribaudino M, Pavese A, Hoser A, Reehuis M (2000) A single-crystal neutron-diffraction investigation of diopside at 10 K The Canadian Mineralogist 38 183-189	2000		0	10
0005694	Diopside	Herd C D K, Peterson R C, Rossman G R (2000) Violet-colored diopside from Southern Baffin Island, Nunavut, Canada The Canadian Mineralogist 38 1193-1199	2000	Southern Baffin Island, Nunavut, Canada	0	293
0006051	Diopside	Tribaudino M, Nestola F, Meneghini C (2005) Rietveld refinement of clinopyroxenes with intermediate Ca-content along the join diopside-enstatite The Canadian Mineralogist 43 1411-1421	2005	synthetic	0	293
0006052	Diopside	Tribaudino M, Nestola F, Meneghini C (2005) Rietveld refinement of clinopyroxenes with intermediate Ca-content along the join diopside-enstatite The Canadian Mineralogist 43 1411-1421	2005	synthetic	0	293
0006053	Diopside	Tribaudino M, Nestola F, Meneghini C (2005) Rietveld refinement of clinopyroxenes with intermediate Ca-content along the join diopside-enstatite The Canadian Mineralogist 43 1411-1421	2005	synthetic	0	293
0006341	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006342	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006343	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006344	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006346	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006347	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006348	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006349	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006350	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006351	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006352	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006353	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006354	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006355	Diopside	Dal Negro A, Manoli S, Secco L, Piccirillo E M (1989) Megacrystic clinopyroxenes from Victoria (Australia): Crystal chemical comparisons of pyroxenes from high and low pressure regimes European Journal of Mineralogy 1 105-121	1989	Victoria, Australia	0	293
0006528	Diopside	Tribaudino M, Molin G M, Bruno E (1994) Effect of Al on enstatite solubility in CMAS clinopyroxenes: 2 - Crystal chemical considerations European Journal of Mineralogy 6 77-86	1994		0	293
0006529	Diopside	Tribaudino M, Molin G M, Bruno E (1994) Effect of Al on enstatite solubility in CMAS clinopyroxenes: 2 - Crystal chemical considerations European Journal of Mineralogy 6 77-86	1994		0	293
0006530	Diopside	Tribaudino M, Molin G M, Bruno E (1994) Effect of Al on enstatite solubility in CMAS clinopyroxenes: 2 - Crystal chemical considerations European Journal of Mineralogy 6 77-86	1994		0	293
0006531	Diopside	Tribaudino M, Molin G M, Bruno E (1994) Effect of Al on enstatite solubility in CMAS clinopyroxenes: 2 - Crystal chemical considerations European Journal of Mineralogy 6 77-86	1994		0	293
0006532	Diopside	Tribaudino M, Molin G M, Bruno E (1994) Effect of Al on enstatite solubility in CMAS clinopyroxenes: 2 - Crystal chemical considerations European Journal of Mineralogy 6 77-86	1994		0	293
0006580	Diopside	Comodi P, Princivalle F, Tirone M, Zanazzi P F (1995) Comparative compressibility of clinopyroxenes from mantle nodules European Journal of Mineralogy 7 141-149	1995		0	293
0006581	Diopside	Comodi P, Princivalle F, Tirone M, Zanazzi P F (1995) Comparative compressibility of clinopyroxenes from mantle nodules European Journal of Mineralogy 7 141-149	1995		0	293
0006622	Diopside	Tribaudino M (1996) High-temperature crystal chemistry of C2/c clinopyroxenes along the join CaMgSi2O6-CaAl2SiO6 European Journal of Mineralogy 8 273-279	1996		0	293
0006623	Diopside	Tribaudino M (1996) High-temperature crystal chemistry of C2/c clinopyroxenes along the join CaMgSi2O6-CaAl2SiO6 European Journal of Mineralogy 8 273-279	1996		0	293
0006624	Diopside	Tribaudino M (1996) High-temperature crystal chemistry of C2/c clinopyroxenes along the join CaMgSi2O6-CaAl2SiO6 European Journal of Mineralogy 8 273-279	1996		0	293
0006625	Diopside	Tribaudino M (1996) High-temperature crystal chemistry of C2/c clinopyroxenes along the join CaMgSi2O6-CaAl2SiO6 European Journal of Mineralogy 8 273-279	1996		0	293
0006626	Diopside	Tribaudino M (1996) High-temperature crystal chemistry of C2/c clinopyroxenes along the join CaMgSi2O6-CaAl2SiO6 European Journal of Mineralogy 8 273-279	1996		0	293
0006695	Diopside	Kabalov Y K, Oeckler O, Sokolova E V, Mironov A B, Chesnokov B V (1997) Subsilicic ferrian aluminian diopside from the Chelyabinsk coal basin (Southern Urals) - an unusual clinopyroxene European Journal of Mineralogy 9 617-621	1997	Chelyabinsk coal basin, Southern Urals	0	293
0006718	Diopside	Redhammer G J (1998) Mossbauer spectroscopy and Rietveld refinement on synthetic ferri-Tschermak's molecule CaFe3+(Fe3+Si)O6 substituted diopside European Journal of Mineralogy 10 439-452	1998		0	293
0006719	Diopside	Redhammer G J (1998) Mossbauer spectroscopy and Rietveld refinement on synthetic ferri-Tschermak's molecule CaFe3+(Fe3+Si)O6 substituted diopside European Journal of Mineralogy 10 439-452	1998		0	293
0006720	Diopside	Redhammer G J (1998) Mossbauer spectroscopy and Rietveld refinement on synthetic ferri-Tschermak's molecule CaFe3+(Fe3+Si)O6 substituted diopside European Journal of Mineralogy 10 439-452	1998		0	293
0006721	Diopside	Redhammer G J (1998) Mossbauer spectroscopy and Rietveld refinement on synthetic ferri-Tschermak's molecule CaFe3+(Fe3+Si)O6 substituted diopside European Journal of Mineralogy 10 439-452	1998		0	293
0006722	Diopside	Redhammer G J (1998) Mossbauer spectroscopy and Rietveld refinement on synthetic ferri-Tschermak's molecule CaFe3+(Fe3+Si)O6 substituted diopside European Journal of Mineralogy 10 439-452	1998		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Diopside'
loop_
_publ_author_name
'Cameron M'
'Sueno S'
'Prewitt C T'
'Papike J J'
_journal_name_full 'American Mineralogist'
_journal_volume 58 
_journal_year 1973
_journal_page_first 594
_journal_page_last 618
_publ_section_title
;
 High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite,
 spodumene, and ureyite
 T = 24 C
 pyroxene
;
_database_code_amcsd 0000340
_chemical_formula_sum 'Si2 Mg Ca O6'
_cell_length_a 9.745
_cell_length_b 8.899
_cell_length_c 5.251
_cell_angle_alpha 90
_cell_angle_beta 105.63
_cell_angle_gamma 90
_cell_volume 438.532
_exptl_crystal_density_diffrn      3.280
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Si   0.28620   0.09330   0.22930
Mg1   0.00000   0.90820   0.25000
Ca2   0.00000   0.30150   0.25000
O1   0.11560   0.08730   0.14220
O2   0.36110   0.25000   0.31800
O3   0.35050   0.01760   0.99530
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Si 0.00245 0.00285 0.00332 -0.00013 0.00060 -0.00023
Mg1 0.00335 0.00301 0.00319 0.00000 0.00022 0.00000
Ca2 0.00803 0.00461 0.00549 0.00000 -0.00079 0.00000
O1 0.00272 0.00501 0.00460 0.00025 0.00026 0.00039
O2 0.00674 0.00381 0.00644 -0.00233 0.00070 -0.00021
O3 0.00410 0.00614 0.00442 0.00000 0.00125 -0.00157

X-Ray Powder DiffractionHide

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Image Loading

Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.

Powder Diffraction Data:

d-spacing	Intensity
2.991 Å	(100)
2.528 Å	(40)
2.893 Å	(30)
2.518 Å	(30)
3.23 Å	(25)
2.952 Å	(25)
1.625 Å	(25)

Comments:

Schwartzenstein, Austria, ICDD 11-654.

Geological EnvironmentHide

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Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration	4.566-4.550
6 : Secondary asteroid phases	4.566-4.560
Stage 3a: Earth’s earliest Hadean crust	>4.50
7 : Ultramafic igneous rocks
Stage 4a: Earth’s earliest continental crust	>4.4-3.0
20 : Acidic volcanic rocks
High-𝑇 alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations
Stage 4b: Highly evolved igneous rocks	>3.0
35 : Ultra-alkali and agpaitic igneous rocks
36 : Carbonatites, kimberlites, and related igneous rocks
37 : Layered igneous intrusions and related PGE minerals
Stage 5: Initiation of plate tectonics	<3.5-2.5
38 : Ophiolites
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere	<0.6
50 : Coal and/or oil shale minerals	<0.36
Stage 10b: Anthropogenic minerals	<10 Ka
54 : Coal and other mine fire minerals (see also #51 and #56)

Type Occurrence of DiopsideHide

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Co-Type Localities:

ⓘ Piedmont, Italy
ⓘ Ala Valley, Lanzo Valleys, Metropolitan City of Turin, Piedmont, Italy

Synonyms of DiopsideHide

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Mussite (of Bonvoisin)

Protheite

Sahlite

Tashmarine

Calc-silicate minerals (in part)

High-calcium pyroxene (in part)

Pacific Cat's Eye (in part)

Other Language Names for DiopsideHide

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Basque:Diopsido

Croatian:Diopsid

Dutch:Diopsied

Esperanto:Diopsido

Finnish:Diopsidi

French:Diopside
Cyclopéite

German:Diopsid
Alalith
Chromaugit
Coccolith
Dekalbit
Leukaugit
Malacolit
Protheit
Sahlit
Salit

Hebrew:דיופסיד

Hungarian:Diopszid

Italian:Diopside

Japanese:透輝石

Polish:Diopsyd

Portuguese:Diópsido

Romanian:Diopsid

Russian:Диопсид

Simplified Chinese:透辉石
次透辉石

Slovak:Diopsid

Spanish:Diopsidos
Alalita
Coccolita
Dekalbita
Leucaugita
Malacolita
Sahlita
Salita

Swedish:Diopsid

Ukrainian:Діопсид

Varieties of DiopsideHide

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Baikalite	A morphological variety of ferroan diopside, approaching 'salite'. Originally described in the 19th century from the Slyudyanka phlogopite mines area, Lake Baikal, Irkutskaya Oblast', Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia.
Blue Diopside	Usually granular diopside forming monomineral zones in magnesium skarns in some regions of Prebaikalie. Nature of blue colouration is uneven.
Canaanite	A white variety of diopside.
Chromium-bearing Diopside	A green, Cr-bearing variety of diopside.
Diallage	A variety (diopside-hedenbergite-augite solid-solution member of the pyroxene group) specifically showing prominent {001} parting and originally supposed to be a distinct species. Occasional misidentifications included orthopyroxene, e.g Metalloidal Diall...
Lavrovite	A green vanadium-bearing variety of diopside. Not to be confused with laverovite.
Leucaugite	A variety of diopside noted for white to tan coloration and with a distinct platy character and somewhat rhombic appearance.
Maclurite (of Nuttall and Torrey)	Seybert (1822):"bears a strong resemblance to hypersthene" "The color of this mineral in the mass, is dark brown, approaching to brownish black; when pulverized is grey; luster metallic. Slightly translucent of the edges. Form [of crystals] indeterminate....
Salite	An obsolete name for a clinopyroxene that would now be classified as an Fe-bearing variety of diopside, i.e. with Mg>Fe.
Schefferite	A brown Mn(II)-bearing variety of diopside that frequently shows pronounced parting (IMA Subcommittee on Pyroxenes 1988). Originally described from Långban, Filipstad, Värmland, Sweden.
Ti Salite	A probably unnecessary name for a Ti- and Fe-bearing diopside.
Titanium-bearing Diopside	A Ti-bearing variety of diopside.
Traversellite	Occasionally alters to amphibole, and pseudomorphs amphibole. Originally reported from Traversella Mine, Traversella, Chiusella Valley, Canavese District, Torino Province, Piedmont, Italy.
Violan	Purple to blue-purple diopside or omphacite coloured by manganese. Note that mauve-coloured diopside, owing its colour to titanium, is not violan. Because of the bright purple colour, violan is probably Mn³⁺-bearing and not Mn²⁺-bearing. Compare johannse...
Zinc-Schefferite	A brown Zn- and Mn-bearing diopside.

Relationship of Diopside to other SpeciesHide

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Member of:

Clinopyroxene Subgroup > Pyroxene Group

Other Members of this group:

Aegirine	NaFe³⁺Si₂O₆	Mon. 2/m : B2/b
Aegirine-augite	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆	Mon. 2/m : B2/b
Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆	Mon. 2/m : B2/b
Burnettite	CaVAlSiO₆	Mon. 2/m : B2/b
Clinoenstatite	MgSiO₃	Mon. 2/m : P2₁/b
Clinoferrosilite	Fe²⁺₂Si₂O₆	Mon. 2/m : P2₁/b
Colomeraite	NaTi³⁺Si₂O₆	Mon. 2/m : B2/b
Davisite	CaScAlSiO₆	Mon. 2/m : B2/b
Esseneite	CaFe³⁺[AlSiO₆]	Mon. 2/m : B2/b
Grossmanite	CaTi³⁺ AlSiO₆	Mon. 2/m : B2/b
Hedenbergite	CaFe²⁺Si₂O₆	Mon. 2/m : B2/b
Jadeite	Na(Al,Fe³⁺)Si₂O₆	Mon. 2/m : B2/b
Jervisite	NaSc³⁺Si₂O₆	Mon. 2/m : B2/b
Johannsenite	CaMn²⁺Si₂O₆	Mon. 2/m : B2/b
Kanoite	Mn²⁺(Mg,Mn²⁺)Si₂O₆	Mon. 2/m : P2₁/b
Kosmochlor	NaCrSi₂O₆	Mon. 2/m : B2/b
Kushiroite	CaAl[AlSiO₆]	Mon. 2/m : B2/b
Namansilite	NaMn³⁺Si₂O₆	Mon. 2/m : B2/b
Natalyite	NaV³⁺Si₂O₆	Mon. 2/m : B2/b
Omphacite	(Na_aCa_bFe²⁺_cMg_d)(Al_eFe³⁺_fFe²⁺_gMg_h)Si₂O₆	Mon. 2/m
Petedunnite	Ca(Zn,Mn²⁺,Mg,Fe²⁺)Si₂O₆	Mon. 2/m : B2/b
Pigeonite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆	Mon. 2/m : P2₁/b
Ryabchikovite	CuMgSi₂O₆	Mon. 2/m : P2₁/b
Spodumene	LiAlSi₂O₆	Mon. 2/m : B2/b
Tissintite	(Ca,Na,◻)AlSi₂O₆	Mon. 2/m : B2/b
UM2001-19-SiO:AlCaMgNa	(Na,Mg,Ca)(Mg,Al)Si₂O₆	Mon. 2/m : B2/b
UM2003-36-SiO:CaNa	NaCrSi₂O₆ - CaMgSi₂O₆	Mon. 2/m : B2/b

Forms a series with:

Johannsenite	Diopside-Johannsenite Series
Hedenbergite	Diopside-Hedenbergite Series
Kosmochlor	Diopside-Kosmochlor Series

Common AssociatesHide

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Associated Minerals Based on Photo Data:

992 photos of Diopside associated with Grossular	Ca₃Al₂(SiO₄)₃
570 photos of Diopside associated with Calcite	CaCO₃
299 photos of Diopside associated with Hessonite	Ca₃Al₂(SiO₄)₃
298 photos of Diopside associated with Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
266 photos of Diopside associated with Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
241 photos of Diopside associated with Vesuvianite	Ca₁₉Fe³⁺Al₄(Al₆Mg₂)(◻₄)◻[Si₂O₇]₄[(SiO₄)₁₀]O(OH)₉
173 photos of Diopside associated with Quartz	SiO₂
155 photos of Diopside associated with Titanite	CaTi(SiO₄)O
137 photos of Diopside associated with Andradite	Ca₃Fe³⁺₂(SiO₄)₃
117 photos of Diopside associated with Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂

Related Minerals - Strunz-mindat Grouping Hide

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9.DA.	Protoenstatite	Mg₂Si₂O₆	Orth. mmm (2/m 2/m 2/m) : Pbcn
9.DA.	Ryabchikovite	CuMgSi₂O₆	Mon. 2/m : P2₁/b
9.DA.	Colomeraite	NaTi³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.05	Donpeacorite	(Mn,Mg)MgSi₂O₆	Orth. mmm (2/m 2/m 2/m) : Pbca
9.DA.05	Enstatite	Mg₂Si₂O₆	Orth. mmm (2/m 2/m 2/m) : Pbca
9.DA.05	Ferrosilite	Fe²⁺₂Si₂O₆	Orth. mmm (2/m 2/m 2/m) : Pbca
9.DA.10	Clinoenstatite	MgSiO₃	Mon. 2/m : P2₁/b
9.DA.10	Clinoferrosilite	Fe²⁺₂Si₂O₆	Mon. 2/m : P2₁/b
9.DA.10	Kanoite	Mn²⁺(Mg,Mn²⁺)Si₂O₆	Mon. 2/m : P2₁/b
9.DA.10	Pigeonite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆	Mon. 2/m : P2₁/b
9.DA.15	Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆	Mon. 2/m : B2/b
9.DA.15	Esseneite	CaFe³⁺[AlSiO₆]	Mon. 2/m : B2/b
9.DA.15	Hedenbergite	CaFe²⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.15 va	Jeffersonite	Ca(Mn,Zn,Fe)Si₂O₆
9.DA.15	Johannsenite	CaMn²⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.15	Petedunnite	Ca(Zn,Mn²⁺,Mg,Fe²⁺)Si₂O₆	Mon. 2/m : B2/b
9.DA.15	Davisite	CaScAlSiO₆	Mon. 2/m : B2/b
9.DA.15	Kushiroite	CaAl[AlSiO₆]	Mon. 2/m : B2/b
9.DA.15	Grossmanite	CaTi³⁺ AlSiO₆	Mon. 2/m : B2/b
9.DA.20	Aegirine-augite	(Na_aCa_bFe²⁺_cMg_d)(Fe³⁺_eAl_fFe²⁺_gMg_h)Si₂O₆	Mon. 2/m : B2/b
9.DA.20	Omphacite	(Na_aCa_bFe²⁺_cMg_d)(Al_eFe³⁺_fFe²⁺_gMg_h)Si₂O₆	Mon. 2/m
9.DA.25	Aegirine	NaFe³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Jadeite	Na(Al,Fe³⁺)Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Jervisite	NaSc³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Kosmochlor	NaCrSi₂O₆	Mon. 2/m : B2/b
9.DA.25	Namansilite	NaMn³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Natalyite	NaV³⁺Si₂O₆	Mon. 2/m : B2/b
9.DA.25	Tissintite	(Ca,Na,◻)AlSi₂O₆	Mon. 2/m : B2/b
9.DA.30	Spodumene	LiAlSi₂O₆	Mon. 2/m : B2/b
9.DA.35	Hiroseite	FeSiO₃	Orth. mmm (2/m 2/m 2/m) : Pnma

Fluorescence of DiopsideHide

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In UV light:

Bright blue-white (white coloured material) (SW UV)

Other InformationHide

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Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Diopside in petrologyHide

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An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Internet Links for DiopsideHide

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mindat.org URL:

https://www.mindat.org/min-1294.html
Please feel free to link to this page.

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External Links:

Look for Diopside on Webmineral

Look for Diopside on Wikipedia

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for DiopsideHide

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Reference List:

d’Andrada, J. B. (1800) Der eigenschaften und kennzeichen einiger neuen fossilien aus Schweden und Norwegen nebst einigen chemischen bemerkungen ueber dieselben. Allgemeines Journal der Chemie 4, 28-39.

d’Andrada, J. B. (1801) Description of some new fossils (Old English translation). A Journal of Natural Philosophy, Chemistry, and the Arts 5, 193-196; 211-213.

Liebisch, T. (1891) Physikalisch Krystallographie, Tafel VI, figs. 4, 5, and 6.

Schairer, J.F. and Bowen, N.L. (1942) The binary system CaSiO3-diopside, and the relations between CaSiO3 and akermanite. American Journal of Science: 240 (10): 725-742.

Osborn, E.F. (1942) The system CaSiO3-diopside-anorthite. American Journal of Science, 240: 11: 751-788.

Smith, J.V. (1966) X-ray emission microanalysis of rock-forming minerals. VI: Clinopyroxenes near the diopside-hedenbergite join. Journal of Geology: 74: 463-467.

Clark, J.R., Appleman, D.E., and Papike, J.J. (1969) Crystal-chemical characterization of clinopyroxenes based on eight new structure refinements. MSA Special Paper: 2: 31-50.

Ghose, S. and Schindler, P. (1969) Determination of the distribution of trace amounts on Mn+2 in diopsides by electron paramagnetic resonance. In: Pyroxenes and Amphiboles: Crystal chemistry and phase petrology. Mineralogical Society of America Special Paper 2: 51-58.

Kushiro, I. (1969) The system forsterite-diopside-silica with and without water at high pressures. American Journal of Science: 267: 269-294.

Cameron, M., Shigeho, S., Prewitt, C.T., and Papike, J.J. (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene and ureyite. American Mineralogist: 58: 594-618.

Mottana, A., Rossi, G., Kracher, A., and Kurat, G. (1979) Violan revisited: Mn-bearing omphacite and diopside. Tschermaks mineralogische und petrographische Mitteilungen: 26: 187-201.

Levien, L. and Prewitt, C.T. (1981) High-pressure structural study of diopside. American Mineralogist: 66: 315-323.

Rossi, G., Smith, D.C., Ungaretti, L., and Domeneghetti, M.C. (1983) Crystal-chemistry and cation ordering in the system diopside-jadeite: a detailed study by crystal structure refinement. Contributions to Mineralogy and Petrology: 83: 247-258.

Richet, P. and Bottinga, Y. (1984) Anorthite, andesine, wollastonite, diopside, cordierite, and pyrope thermodynamics of melting, glass transitions, and properties of the amorphous phases. Earth and Planetary Science Letters: 67: 415-432.

Johnson, K.T.M., Dick, H.J.B., and Shimizu, N. (1990) Melting in the oceanic upper mantle: an ion microprobe study of diopsides in abyssal peridotites. Journal of Geophysical Research: 95: 2661-2678.

Raterron, P. and Jaoul, O. (1991) High-temperature deformation of diopside single crystal, 1., Mechanical data. Journal of Geophysical Research, B, Solid Earth and Planets: 96: 14277-14286.

Knoche, R., Dingwell, D.B., and Webb, S.L. (1992) Non-linear temperature dependence of liquid volumes in the system albite-anorthite-diopside. Contributions to Mineralogy and Petrology: 111: 61-73.

Knoche, R., Dingwell, D.B., and Webb, S.L. (1992) Temperature-dependent thermal expansivities of silicate melts: The system anorthite-diopside. Geochimica et Cosmochimica Acta: 56: 689-699.

Harlow, G.E. (1996) Structure refinement of a natural K-rich diopside: the effect of K on the average structure. American Mineralogist: 81: 632-638.

Courtial, P., Téqui, C., and Richet, P. (2000) Thermodynamics of diopside, anorthite, pseudowollastonite, CaMgGeO4 olivine, and åkermanite up to near the melting point. Physics and Chemistry of Minerals: 27: 242-250.

Yang, Y., Xia, Q., and Zhang, P. (2015) Evolution of OH groups in diopside and feldspars with temperature. European Journal of Mineralogy: 27(2): 185-192.

Popov, V.A. (2021): Green diopside with mauve termination from the Bazhenovskoe chrysotile-asbestos deposit, Central Urals. Mineralogy: 7: 78–81.

Su, Chang, Fan, Dawei, Jiang, Jiyi, Sun, Zhenjun, Liu, Yonggang, Song, Wei, Wan, Yongge, Yang, Guang, Qiu, Wuxueying (2021) Self-Consistent Thermodynamic Parameters of Diopside at High Temperatures and High Pressures: Implications for the Adiabatic Geotherm of an Eclogitic Upper Mantle. Minerals, 11 (12) 1322 doi:10.3390/min11121322

(2023) Diopside. Handbook of Mineralogy. Mineralogical Society of America

Localities for DiopsideHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

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Locality ListShow

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- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Afghanistan
Badakhshan Jurm District ⓘ Farghamiru	*Woodside, R. M., Moore, Thomas P. (2014) Famous mineral localities: The Sar-e-Sang lapis mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. The Mineralogical Record, 45 (3) 280-336*
Kuran wa Munjan District ⓘ Robate Payan	Moore, T.P.,Woodside, R.M.W. (2014): The Sar-e-Sang Lapis Mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. Mineralogical Record 45 (3), 280-336.
ⓘ Sar-e-Sang	Woolley, Alan R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands. The Geological Society of London. doi:10.1144/mpar4
ⓘ Jungaluk	Moore, T.P.,Woodside, R.M.W. (2014): The Sar-e-Sang Lapis Mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. Mineralogical Record 45 (3), 280-336.
ⓘ Ladjuar Medam	*Hogarth, Donald D. (1979) Afghanite: new occurrences and chemical composition. The Canadian Mineralogist, 17 (1) 47-52* Journal of Petrology 43(4):725-747 (2002)
ⓘ Unnamed Gem Sodalite occurrence	Woodside collection
Sar-e-Sang River ⓘ Pitwak Mine	John Attard (2014) Private Communication
ⓘ Unnamed meta-evaporite occurrence	Moore, T.P.,Woodside, R.M.W. (2014): The Sar-e-Sang Lapis Mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. Mineralogical Record 45 (3), 280-336.
Ghazni Malistan District ⓘ Deposit No. 551	*Orris, G.J., Bliss, J.D. (2002) Mine and mineral occurrences of Afghanistan. Open-File Report* 2002-110. US Geological Survey doi:10.3133/ofr02110**
Muqur District ⓘ Basharghar Au occurrence	*Orris, G.J., Bliss, J.D. (2002) Mine and mineral occurrences of Afghanistan. Open-File Report* 2002-110. US Geological Survey doi:10.3133/ofr02110**
ⓘ Zarkashan Au-Cu deposit	Stephen G. Peters, Said H. Mirzad, Emily Scott, and Bernard E. Hubbard (2011) Summary of the Zarkashan Copper and Gold Area of Interest. Summaries of Important Areas for Mineral Investment and Production Opportunities of Nonfuel Minerals in Afghanistan, chapter 15A (pp.1113-1153) Katherine C. Malpeli, Peter G. Chirico, and Isabel H. McLoughlin (2013) Reconnaissance Investigation of the Placer Gold Deposits in the Zarkashan Area of Interest, Ghazni Province, Afghanistan. Open-File Report 2013–1179. USGS Afghanistan Project Product No. 185. U.S. Department of the Interior, U.S. Geological Survey
Kandahar Shah Wali Kot District ⓘ Ghbargay Cu-Bi-Sn occurrence	*Orris, G.J., Bliss, J.D. (2002) Mine and mineral occurrences of Afghanistan. Open-File Report* 2002-110. US Geological Survey doi:10.3133/ofr02110**
ⓘ Kunar	various photographs
Nangarhar ⓘ Khogyani District	Rob Lavinsky.
Sherzad District ⓘ Marki Khel	Blauwet, D., 2008, Pakistan and Afghanistan: Garnet from the Roof of the World, in: Garnet, Great Balls of Fire, Lithographie, LLC
Urozgan Gizab District ⓘ Buzghala Au-Cu occurrence	*Orris, G.J., Bliss, J.D. (2002) Mine and mineral occurrences of Afghanistan. Open-File Report* 2002-110. US Geological Survey doi:10.3133/ofr02110**

Africa
ⓘ Mount Bisoke	Denaeyer, M. E., & Schellinck, F. (1965). Recueil d'analyses des laves du fosse tectonique de l'Afrique Centrale (Kivu, Rwanda, Toro-Ankole). Musée royal de l'Afrique centrale. De Mulder, M., & Pasteels, P. (1986). K Ar geochronology of the Karisimbi volcano (Virunga, Rwanda-Zaire). Journal of African Earth Sciences (1983), 5(6), 575-579. doi.org/10.1016/0899-5362(86)90023-0 Marcelot, G., & Rançon, J. P. (1988). Mineral chemistry of leucitites from Visoke Volcano (Virunga Range, Rwanda): petrogenetic implications. Mineralogical Magazine, 52(368), 603-613. doi.org/10.1180/minmag.1988.052.368.05
ⓘ Mount Elgon	Ödman, O.H. 1931. Volcanic rocks of Mt Elgon in British East Africa. Geologiska Föreningens i Stockholm Förhandlingar, 52, 455-537. Ödman, O. H. (1932). Mineragraphic Study on the Opaque Minerals in the Lavas from Mt. Elgon, British East Africa. Geologiska Föreningen i Stockholm Förhandlingar, 54(3), 285-304. doi.org/10.1080/11035893209448796 Davies, K. A. (1952). The building of Mount Elgon (East Africa): Uganda Geol. Surv. Bishop, W. W., Miller, J. A., & Fitch, F. J. (1969). New potassium-argon age determinations relevant to the Miocene fossil mammal sequence in East Africa. American Journal of Science, 267(6), 669-699. Walker, A. (1969). Fossil Mammal Locality on Mount Elgon, Eastern Ugand: Lower Miocene Fossils from Mount Elgon Uganda. Nature, 223(5206), 591-596. Simonetti, A., & Bell, K. (1995). Nd, Pb and Sr isotopic data from the Mount Elgon volcano, eastern Uganda-western Kenya: implications for the origin and evolution of nephelinite lavas. Lithos, 36(2), 141-153. doi.org/10.1016/0024-4937(95)00011-4
ⓘ Mount Karisimbi	Marcelot, G., Rançon, J. P., & Demange, J. (1985). The potassic series of Karisimbi volcano (Virunga range, Rwanda): Volcanological and petrological aspects. Journal of volcanology and geothermal research, 26(1-2), 99-129. doi.org/10.1016/0377-0273(85)90048-4 De Mulder, M. (1985). The Karisimbi volcano (Virunga). Annales-Musée royal de l'Afrique Centrale. Sciences géologiques, (90). De Mulder, M., & Pasteels, P. (1986). K Ar geochronology of the Karisimbi volcano (Virunga, Rwanda-Zaire). Journal of African Earth Sciences (1983), 5(6), 575-579. doi.org/10.1016/0899-5362(86)90023-0 De Mulder, M., Hertogen, J., Deutsch, S., & André, L. (1986). The role of crustal contamination in the potassic suite of the Karisimbi volcano (Virunga, African Rift Valley). Chemical geology, 57(1-2), 117-136. doi.org/10.1016/0009-2541(86)90097-5 Rogers, N. W., De Mulder, M., & Hawkesworth, C. J. (1992). An enriched mantle source for potassic basanites: evidence from Karisimbi volcano, Virunga volcanic province, Rwanda. Contributions to Mineralogy and Petrology, 111(4), 543-556. doi.org//10.1007/BF00320908

Albania
Dibër County Bater-Martanesh mining district ⓘ Bulqiza Complex (Bulqiza Massif)	Çina, A. (2010). Mineralogy of chromitite, Bulqiza ultramaficmassif, albanian ophiolitic complex. Δελτίον της Ελληνικής Γεωλογικής Εταιρίας, 43(5), 2577-2587.

Algeria
Bordj Badji Mokhtar Province Bordj Badji Mokhtar District Bordj Badji Mokhtar ⓘ Ouallen meteorite	Oba, T., Nagase, K. & Hayashi, A. (1998) Mineralogy and petrology of chondrule in Ouallen (Tanezrouft) meteorite: Bulletin Joetsu Univ. Educ. 17(2): 891-899. (March1998).
Bouïra Province Sour El Ghozlane District Sour El-Ghozlane ⓘ Aumale meteorite	Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. Meteoritics & Planetary Science 45(1): 123-134. (Jan 2010).
In Salah Province In Salah District Foggaret Ezzaouia ⓘ Acfer 094 meteorite	Krot, A. N., Fagan, T. J., Keil, K., McKeegan, K. D., Sahijpal, S., Hutcheon, I. D., Petaev, M. I. & Yurimoto, H. (2004). Ca,Al-rich inclusions, amoeboid olivine aggregates, and Al-rich chondrules from the unique carbonaceous chondrite Acfer 094: I. mineralogy and petrology. Geochimica et Cosmochimica Acta 68 (9), 2167-2184. (May 2004).
Lakhbi ⓘ Northwest Africa 2046 Martian meteorite	www.meteoriticalsociety.org/bulletin/mb88.pdf.
Skikda Province Azzaba District Es Sebt ⓘ Kef Hahouner lamproite intrusion	Lustrino, M., Agostini, S., Chalal, Y., Fedele, L., Stagno, V., Colombi, F., & Bouguerra, A. (2016). Exotic lamproites or normal ultrapotassic rocks? The Late Miocene volcanic rocks from Kef Hahouner, NE Algeria, in the frame of the circum-Mediterranean lamproites. Journal of Volcanology and Geothermal Research, 327, 539-553.
ⓘ Koudiat el Anzazza lamproite intrusion	Kamiskey, F.V., Raman'ko, Ye.F., Kolesnikov, S.K. & Salkhi, M. 1993. Lamproites of northern Algeria. International Geology Review, 35, 235-252. Raoult, J. F., & Velde, D. (1971). Découvertes de trachytes potassiques aolivine et d’andésites en coulées dans le Miocene continental au Sud du Kef Hahouner (Nord du Constantinois). CR Acad. Sci. Paris, 272, 1051-1054.
Tamanrasset Province (Tamanghasset Province) Abalessa District ⓘ Tahalra Volcanic Field	Allègre, C. J., Dupré, B., Lambret, B., & Richard, P. (1981). The subcontinental versus suboceanic debate, I Lead-neodymium-strontium isotopes in primary alkali basalts from a shield area the Ahaggar volcanic suite. Earth and Planetary Science Letters, 52(1), 85-92. Girod, M., Dautria, J. M., & De Giovanni, R. (1981). A first insight into the constitution of the upper mantle under the Hoggar area (southern Algeria): the lherzolite xenoliths in the alkali-basalts. Contributions to Mineralogy and Petrology, 77(1), 66-73. Leblanc, M., Dautria, J. M., & Girod, M. (1982). Magnesian ilmenitite xenoliths in a basanite from Tahalra, Ahaggar (Southern Algeria). Contributions to Mineralogy and Petrology, 79(4), 347-354 Dautria, J. M., Liotard, J. M., Cabanes, N., Girod, M., & Briqueu, L. (1987). Amphibole-rich xenoliths and host alkali basalts: petrogenetic constraints and implications on the recent evolution of the upper mantle beneath Ahaggar (Central Sahara, Southern Algeria). Contributions to Mineralogy and Petrology, 95(2), 133-144. Dautria, J. M., Dostal, J., Dupuy, C., & Liotard, J. M. (1988). Geochemistry and petrogenesis of alkali basalts from Tahalra (Hoggar, Northwest Africa). Chemical Geology, 69(1-2), 17-35.
ⓘ Atakor Volcanic Field	apports des donnees radiometriques (K/Ar) et paleobotaniques (bois fossiles). Bulletin de la Société Géologique de France, 7(6), 973-980. Girod, M. (1971). Le massif volcanique de l'Atakor (Hoggar, Sahara algérien): étude pétrographique, structurale et volcanologique. Centre de Recherches sur les zones arides. Serie Geologie, Editions du Centre National de la Recherche Scientifique, Paris, 12, 1-158. Allègre, C. J., Dupré, B., Lambret, B., & Richard, P. (1981). The subcontinental versus suboceanic debate, I Lead-neodymium-strontium isotopes in primary alkali basalts from a shield area the Ahaggar volcanic suite. Earth and Planetary Science Letters, 52(1), 85-92. Boivin, P., & Camus, G. (1981). Igneous scapolite-bearing associations in the Chaine des Puys, Massif Central (France) and Atakor (Hoggar, Algeria). Contributions to Mineralogy and Petrology, 77(4), 365-375. Girod, M., Dautria, J. M., & De Giovanni, R. (1981). A first insight into the constitution of the upper mantle under the Hoggar area (southern Algeria): the lherzolite xenoliths in the alkali-basalts. Contributions to Mineralogy and Petrology, 77(1), 66-73. Rognon, P., Gourinard, Y., Bandet, Y., Koeniguer, J. C., & Delteil-Desneux, F. (1983). Precisions chronologiques sur l'evolution volcanotectonique et geomorphologique de l'Atakor (Hoggar) Dupuy, C., Dostal, J., Dautria, J. M., & Girod, M. (1986). Geochemistry of spinel peridotite inclusions in basalts from Hoggar, Algeria. Journal of African Earth Sciences (1983), 5(3), 209-215.
ⓘ In Ouzzal	2 Allègre, C. J., & Caby, R. (1972). Chronologie absolue du Précambrien de l'Ahaggar occidental. CR Acad. Sci. Paris, 275(D), 2095-2098. Bernard-Griffiths, J., Peucat, J. J., Fourcade, S., Kienast, J. R., & Ouzegane, K. (1988). Origin and evolution of 2 Ga old carbonatite complex (Ihouhaouene, Ahaggar, Algeria): Nd and Sr isotopic evidence. Contributions to Mineralogy and Petrology, 100(3), 339-348. doi.org/ 10.1007/BF00379743 Carpena, J., Kienast, J. R., Ouzegane, K., & Jehanno, C. (1988). Evidence of the contrasted fission-track clock behavior of the apatites from In Ouzzal carbonatites (northwest Hoggar): The low-temperature thermal history of an Archean basement. Geological Society of America Bulletin, 100(8), 1237-1243. doi.org/10.1130/0016-7606(1988)100<1237:EOTCFT>2.3.CO Ouzegane, K., Fourcade, S., Kienast, J. R., & Javoy, M. (1988). New carbonatite complexes in the Archaean In'Ouzzal nucleus (Ahaggar, Algeria): mineralogical and geochemical data. Contributions to Mineralogy and Petrology, 98(3), 277-292. doi.org/10.1007/BF00375179 Fourcade, S., KIENAST, J. R., & Ouzegane, K. (1996). Metasomatic effects related to channelled fluid streaming through deep crust: fenites and associated carbonatites (In Ouzzal Proterozoic granulites, Hoggar, Algeria). Journal of Metamorphic Geology, 14(6), 763-781. doi.org/10.1111/j.1525-1314.1996.00055.x

Angola
Cuanza Sul Province Seles ⓘ Catanda	Gomes, C. de S.F. 1969. Ocorrencia de chromite no carbonatito vulcanico da Catanda (Angola). Boletim dos Servicos de Geologia e Minas de Angola, Luanda, 20, 55-59. Lapido-Loureiro, F.E. 1973. Carbonatitos de Angola. Memorias e Trabalhos do Instituto de Investigacoes Cientifica de Angola, 11. Silva, M.V.S. 1973. Estrutura vulcanico-carbonatitica da Catanda (Angola). Boletim dos Servicos de Geologia e Minas de Angola, 24, 5-14.
Cunene Province Namacunde ⓘ Ehole meteorite	Dunn, T.L., Cressy, G., McSween Jr, H.Y. & McCoy, T.J. (2010) Analysis of ordinary chondrites using powder X-ray diffraction: 1. Modal mineral abundances. Meteoritics & Planetary Science 45(1):123-134. (Jan 2010). between textural maturity and temperature: Geochimica et Cosmochimica Acta 71(7):1855-1881. (April 2007).
Huambo Province Londuimbali ⓘ Monte Verde	Amores-Casals, S. Gonçalves, A.O. Melgarejo, J.-C. Molist, J.M. (2020) Nb and REE Distribution in the Monte Verde Carbonatite–Alkaline–Agpaitic Complex (Angola). Minerals 10, 5.
Huíla Province Quilengues ⓘ Mount Bonga	Amores-Casals, S., Melgarejo, J. C., Bambi, A., Gonçalves, A. O., Morais, E. A., Manuel, J., ... & Molist, J. M. (2019). Lamprophyre-Carbonatite Magma Mingling and Subsolidus Processes as Key Controls on Critical Element Concentration in Carbonatites—The Bonga Complex (Angola). Minerals, 9(10), 601.
ⓘ Mount Tchivira	Eur. J. Mineral. , 1993, 5, pp. 1001-1024.
Lunda Norte Province Lucapa Camissombo ⓘ Camatue Mine	*Pavel.M. Kartashov (n.d.) analytical data.*
Capaia Chicapa River Valley ⓘ Camatchia-Camagico mine	Milesi, J. P., Toteu, S. F., Deschamps, Y., Feybesse, J. L., Lerouge, C., Cocherie, A., ... & Nicol, N. (2006). An overview of the geology and major ore deposits of Central Africa: Explanatory note for the 1: 4,000,000 map “Geology and major ore deposits of Central Africa”. Journal of African Earth Sciences, 44(4-5), 571-595.
Lunda Sul Province ⓘ Catoca Mine	[var: Chromium-bearing Diopside] www.venuewest.com (2003) http://www.venuewest.com/8IKC/s1post.htm Cruz, S. R., Watangua, M., Melgarejo, J. C., & Gali, S. (2008). New insights into the concept of ilmenite as an indicator for diamond exploration, based on kimberlit petrographic analysis. Revista de la sociedad española de mineralogia, 9, 205-206. Nikitina, L. P., Marin, Y. B., Skublov, S. G., Korolev, N. M., Saltykova, A. K., Zinchenko, V. N., & Chissupa, H. M. (2012). U-Pb age and geochemistry of zircon from mantle xenoliths of the Katoka and Kat-115 kimberlitic pipes (Republic of Angola). In Doklady Earth Sciences (Vol. 445, No. 1, pp. 840-844). MAIK Nauka/Interperiodica.

Antarctica	[var: Diallage]

Eastern Antarctica ⓘ Fuglefjellet	Elvevold, S., & Ohta, Y. (2010). Nature environment map: HU Sverdrupfjella, Dronning Maud Land, East Antarctica, 1: 150 000.
Mac Robertson Land Prince Charles Mountains Jetty Peninsula ⓘ Jetty Oasis	[var: Chromium-bearing Diopside] Kogarko, L.N., Kurat, G., and Ntaflos, T. (2007) Henrymeyerite in the metasomatized upper mantle of eastern Antarctica. The Canadian Mineralogist, 45(3), 497-501.
ⓘ MacAlpine Hills 88136 meteorite	Lin, Y. T., Nagel, H-J., Lundberg, L. L. & El Goresy, A. (1991) MAC88136--The First EL3 Chondrite (abstract): Lunar and Planetary Science Conference XXII: 811-812. (March 1991)
Miller Range ⓘ Miller Range 03443 meteorite	Mittlefehldt, D. W. (2008) Meteorite Dunite Breccia MIL 03443: A Probable Crustal Cumulate Closely Related to Diogenites from the HED Parent Asteroid: Lunar and Planetary Science XXXIX. LPI Contribution No. 1391: pdf.1919. (March 2008) Beck, A. W. & McSween, H. Y. (2010) Connections Between Dunite MIL 03443 and the Diogenite Meteorites: Lunar Planetary Science Conference XLI. LPI Contribution No. 1533: pdf.1104. (March 2010)
Queen Elizabeth Land Pensacola Mountains ⓘ Mount Campleman	Leat, P. T., Riley, T. R., Storey, B. C., Kelley, S. P., & Millar, I. L. (2000). Middle Jurassic ultramafic lamprophyre dyke within the Ferrar magmatic province, Pensacola Mountains, Antarctica. Mineralogical Magazine, 64(1), 95-111.
Queen Maud Land ⓘ Austhovde	Hiroi, Y., Hokada, T., Adachi, T., Shiraishi, K., Motoyoshi, Y., & Grew, E. S. (2023). Nanogranitoid inclusions with grandidierite in mafic granulite from Austhovde, Lützow-Holm Complex, East Antarctica. Journal of Mineralogical and Petrological Sciences, 221209.
ⓘ Belgica 7904 meteorite	Kimura, M. & Ikeda, Y. (1992). Mineralogy and Petrology of an unusual Belgica-7904 Carbonaceous Chondrite: Genetic Relationships among the Components. Proc. NIPR Symp. Antarct. Meteorites 5: 74-119. (March 1992)
Drygalski Mountains ⓘ Marmorny Nunatak
ⓘ Kjakebeinet and Muren	Luttinen, A. V., Zhang, X., & Foland, K. A. (2002). 159 Ma Kjakebeinet lamproites (Dronning Maud Land, Antarctica) and their implications for Gondwana breakup processes. Geological Magazine, 139(5), 525-539.
Queen Fabiola Mts ⓘ Yamato 000593 Martian meteorite	Gyollai, I., Kereszturi, A., Chatzitheodoridis, E. (2016): Analysis of altered mineral phases in Yamato 593 Martian meteorite. 47^th Lunar and Planetary Science Conference: pdf no. 1911
ⓘ Yamato 691 meteorite	Ikeda Yukio (1988): Petrochemical study of the Yamato-691 enstatite chondrite (EH3) II: Descriptions and mineral compositions of unusual silicate-inclusions. Proceedings of the NIPR Symposium on Antarctic Meteorites 1, 14-37. [http://ci.nii.ac.jp/naid/110000029852/en/]
ⓘ Yamato 790729 meteorite	Kato, Y., Sekine, T., Kayama, M., Miyahara, M., & Yamaguchi, A. (2017). High‐pressure polymorphs in Yamato‐790729 L6 chondrite and their significance for collisional conditions. Meteoritics & Planetary Science, 52(12), 2570-2585.
ⓘ Yamato 81020 meteorite	Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA. Itoh, S., Rubin, A. E., Kojima, H., Wasson, J. T. & Yurimoto, H. (2003) Amoeboid Olivine Aggregates and AOA-bearing Chondrule from Y-81020 CO3.0 Chondrite: Distribution of Oxygen and Magnesium Isotopes (abstract): Lunar and Planetary Science Conference XXXIII, abstract #1490. (Mar 2003).
ⓘ Yamato 82050 meteorite	Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (James J. Papike, Editor), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA. Hiyagon, H. & Hashimoto, A. (1999). An Ion Microprobe Study of Oxygen Isotopes in Various Types of Inclusions in Y-82050 (CO3), ALH-77307 (CO3) and Y-86009 (CV3) Chondrites (abstract): 30th Annual Lunar and Planetary Science Conference, abstract no. 1319. (Mar 1999).
Victoria Land Allan Hills ⓘ Allan Hills 84008 meteorite	Rosenshein, E. B., Ivanova, M. A., Dickinson, T. L., McCoy, T. J., Lauretta, D. S., Guan, Y., (2006) Oxide-bearing and FeO-rich clasts in aubrites. Meteoritics, vol. 41, Issue 4, p.495-503
ⓘ Allan Hills 85085 meteorite	Glenn J. MacPherson, Andrew M. Davis & Jeffrey N. Grossman (1989). Refractory inclusions in the unique chondrite ALH85085. Meteoritics 24, p. 297.
ⓘ Allan Hills A76004 meteorite	Steele. I.M. (1995) Oscillatory zoning in meteoritic Forsterite: American Mineralogist 80 (7&8): 823-832. (Jul/Aug1995).
ⓘ Allan Hills A77003 meteorite	Brearley, A. J. & R.H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J., Editor), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA.
ⓘ Allan Hills A77230 meteorite	Tsuchiyama, A., Fujita, T. & Morimoto, N. (1988). Fe-Mg Heterogeneity in the low-Ca Pyroxenes during metamorphism of the Ordinary Chondrites. Proc. NIPR Symposium Antarct. Meteorites 1, 173-174.
ⓘ Allan Hills A77278 meteorite	Krot, A.N. & Rubin, A.E. (1994) Glass-rich chondrules in ordinary chondrites: New occurrences and possible origin: Meteoritics 29(5): 697-707. (Sept 1994). Krot, A.N. & Wasson, J.T. (1994) Silica-merrihueite/roedderite-bearing chondrules and clasts in ordinary chondrites: New occurrences and possible origin: Meteoritics 29(5): 707-718. (Sept 1994).
ⓘ Allan Hills A77307 meteorite	*Han, Jangmi, Brearley, Adrian J. (2011) Formation of TiO2 Nanoparticles in a CAI-Like Object from an AOA in the ALHA 77307 CO3.0 Carbonaceous Chondrite. 74th Annual Meteoritical Society Meeting.* Han, J. & Brearley, A. J. (2011) Evidence for Formation of Al-Ti Pyroxene by Reaction Between Perovskite and Melilite in a CAI-Like Object from an AOA in the ALHA 77307 CO3.0 Chondrite. 74th Annual Meeting of the Meteoritical Society, held August 8-12, 2011 in London, UK. Published in Meteoritics and Planetary Science Supplement, id.5388. (Sept 2011) Han, J. & Brearley, A. J. (2012) The Microstructure and Microchemistry of Amoeboid Olivine Aggregates from the ALHA 77307 CO3.0 Carbonaceous Chondrite: Constraints on Formation and Thermal Histories: 43rd Lunar and Planetary Science Conference. LPI Contribution No. 1659, id.1323. (Mar 2012)
Elephant Moraine ⓘ Elephant Moraine 90102 meteorite	Fogel, R. A. (1997) On the significance of diopside and oldhamite in enstatite chondrites and aubrites. Meteoritics, vol. 32, pages 577-591
ⓘ Frontier Mountain meteorite trap	[var: Chromium-bearing Diopside] Meteoritical Bulletin, 84 (Aug. 2000)
ⓘ Greene Complex	Proceedings of the VII International Symposium on Antarctic Earth Sciences, Siena, 1995. Terra Antartica Publ., 511-521 Ricci, C. A. (1997). The Antarctic Region: Geological Evolution and Processes
Grosvenor Mountains ⓘ Larkman Nunatak 04316 meteorite	Keil, K., Mccoy, T. J., Wilson, L., BARRAT, J. A., Rumble, D., Meier, M. M., ... & Huss, G. R. (2011). A composite Fe, Ni‐FeS and enstatite‐forsterite‐diopside‐glass vitrophyre clast in the Larkman Nunatak 04316 aubrite: Origin by pyroclastic volcanism. Meteoritics & Planetary Science, 46(11), 1719-1741.
ⓘ Larkman Nunatak 06299 meteorite	Rubin, A. E., & Moore, W. B. (2011). What’s up? Preservation of gravitational direction in the Larkman Nunatak 06299 LL impact melt breccia. Meteoritics & Planetary Science, 46(5), 737-747.
ⓘ Harrow Peaks	Gentili, S., Biagioni, C., Comodi, P., Pasero, M., Mccammon, C., Bonadiman, C. (2016): Ferri-kaersutite, NaCa2(Mg3TiFe3+)(Si6Al2)O22O2, a new oxo-amphibole from Harrow Peaks, Northern Victoria Land, Antarctica. American Mineralogist, 101, 461-468
ⓘ Mt Melbourne	Geological Society, London, Special Publications 2008, v. 293, p. 279-302 Hornig, I., & Wörner, G. (1991). Zirconolite-bearing ultra-potassic veins in a mantle-xenolith from Mt. Melbourne Volcanic Field, Victoria Land, Antarctica. Contributions to Mineralogy and Petrology, 106(3), 355-366.
Ross Archipelago Ross Island ⓘ Hut Point Peninsula	Collection of RJ Martin
ⓘ White Island	Cooper, A. F., Adam, L. J., Coulter, R. F., Eby, G. N., & McIntosh, W. C. (2007). Geology, geochronology and geochemistry of a basanitic volcano, White Island, Ross Sea, Antarctica. Journal of Volcanology and Geothermal Research, 165(3-4), 189-216.
ⓘ Royal Society Range	Yoshida, Y., Kaminuma, K., & Shiraishi, K. (1992). Recent progress in Antarctic earth science. Tokyo: Terra Sci Pub Com, 257-264
Kaiser Wilhelm II Land ⓘ Gaussberg	Sheraton, J. W., & Cundari, A. (1980). Leucitites from gaussberg, Antarctica. Contributions to Mineralogy and Petrology, 71(4), 417-427. Collerson, K. D., & McCulloch, M. T. (1983). Nd and Sr isotope geochemistry of leucite-bearing lavas from Gaussberg, East Antarctica. In Antarctic earth science. International symposium. 4 (pp. 676-680).
Western Antarctica Antarctic Peninsula South Shetland Islands King George Island Admiralty Bay ⓘ Ezcurra Inlet	Mozer, A. (2012). Pre-glacial sedimentary facies of the Point Thomas Formation (Eocene) at Cytadela, Admiralty Bay, King George Island, West Antarctica. Polish Polar Research, 33(1), 41-62.
Marie Byrd Land ⓘ Dorrel Rock	LeMasurier, W. E., & Rex, D. C. (1982). Volcanic record of Cenozoic glacial history in Marie Byrd Land and western Ellsworth Land: Revised chronology and evaluation of tectonic factors. Antarctic Geoscience, 89, 725-734. *LeMasurier, W.E. (1990) B. Marie Byrd Land. In Volcanoes of the Antarctic Plate and Southern Oceans* Vol. 48 - Antarctic Research Series. American Geophysical Union. p.146-255. doi:10.1029/AR048*pp.235-137 Rocchi, S., LeMasurier, W. E., & Di Vincenzo, G. (2006). Oligocene to Holocene erosion and glacial history in Marie Byrd Land, West Antarctica, inferred from exhumation of the Dorrel Rock intrusive complex and from volcano morphologies. Geological Society of America Bulletin, 118(7-8), 991-1005. Woolley, Alan R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands*. The Geological Society of London. doi:10.1144/mpar4p.5
Executive Committee Range ⓘ Mount Sidley	Woolley, Alan R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands. The Geological Society of London. doi:10.1144/mpar4

Argentina
Catamarca Province Agua de Dionisio mining district ⓘ Rama Norte Vein	F. Martínez. ESTUDIO MINERALÓGICO PRELIMINAR DE LA ALTERACIÓN HIDROTERMAL DE LA ROCA DE CAJA DE LA VETA FARALLÓN NEGRO RAMA NORTE, PROVINCIA DE CATAMARCA, ARGENTINA. Fundación Miguel Lillo. Facundomartinezz22@hotmail.com
Andalgalá Department Aconquija ⓘ Caspichango pegmatite	[var: Chromium-bearing Diopside] Raúl Jorge Tauber Larry
ⓘ El Carrizal	[var: Chromium-bearing Diopside] Raúl Jorge Tauber Larry (2010).
ⓘ Villavil River	Raul J. Tauber Larry
Chaco Province Doce de Octubre Department Gancedo ⓘ Campo del Cielo meteorite	[var: Chromium-bearing Diopside] Lunar and Planetary Science XXXIV (2003)
Chubut Province Río Senguer Department Alto Río Senguer ⓘ El Abuelo skarn deposit	LANFRANCHINI, M.E.. Geological characterization of "El Abuelo" skarn deposit, Alto Rio Senguerr, Chubut. Rev. Asoc. Geol. Argent. [online]. 2004, vol.59, n.4, pp. 685-692
Córdoba Province Punilla Department San Antonio District Pampa de Olaen ⓘ Los Guindos	Espeche, M. J., Lira, R., & Guereschi, A. B. () Zincocromita En Un Skarn Del Grupo Minero Los Guindos, Córdoba: Primer Registro En Argentina.
Jujuy Province Cochinoca Department Abdón Castro Tolay ⓘ Santa Ana	ZAPPETTINI, Eduardo O and SANTOS, Joao O. Finding of baddeleyite in Jujuy: Mineralogical data and U/Pb SHRIMP age. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 540-543.
Humahuaca Department El Aguilar ⓘ Aguilar Mine	Econ Geol (1992) 87:2085-2112 Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina)
ⓘ Esperanza prospect	Singer, Donald A., Berger, Vladimir I., Moring, Barry C. (2009) Sediment-Hosted Zinc-Lead Deposits of the World - Database and Grade and Tonnage Models. Open-File Report 2009-1252. US Geological Survey doi:10.3133/ofr20091252
Mendoza Province Las Heras Department Capdevilla District ⓘ Puesto la Peña alkaline complex	ZAPPETTINI, Eduardo O. BRODTKORB, Milka K. de BERNHARDT, Heinz-Jürgen and VILLAR, Luisa. The spinels of the alcaline complex Puesto la Peña, province of Mendoza. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 544-549 Pagano Género, D. S., Galliski, M. A., Marquez Zavalia, M. F., Novák, M., & Skoda, R. (2016). Petrography, mineralogy, and origin of the syenite pegmatitic segregation veins from La Peña alkaline complex, Mendoza, Argentina. Pagano Género, D. S., Galliski, M. A., Marquez Zavalia, M. F., & Colombo, F. (2016). Petrology and mineralogy of the La Peña igneous complex, Mendoza, Argentina: An alkaline occurrence in the Miocene magmatism of the Southern Central Andes. Pagano, D.S., Galliski, M.Á., Márquez-Zavalía, M.F., Colombo, F. (2016): Petrology and mineralogy of the La Peña igneous complex, Mendoza, Argentina: An alkaline occurrence in the Miocene magmatism of the Southern Central Andes. Journal of South American Earth Sciences: 67 (in press) (2016)
Malargüe Department Malargüe District Los Molles ⓘ Vegas Peladas deposit	PONS, María Josefina FRANCHINI, Marta Pons, María Josefina, Franchini, Marta, Mas, Graciela, Ríos, Francisco Javier (2009) Modelo Genético de los Skarns de Fe de Vegas Peladas, Mendoza. Revista de la Asociación Geológica Argentina, 64 (4) Buenos Aires. 615-634
San Carlos Department Pareditas District ⓘ Portillo Argentino prospect	DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.
Salta Province Cafayate Department Santa Maria Valley Tolombón ⓘ San José Formation	Raúl Jorge Tauber Larry Herbst, Rafael, Morton, Lourdes S., Anzótegui, Luisa M., Garralla, Silvina S., Robledo, Juan M. (2011) - LA FORMACIÓN SAN JOSÉ (MIOCENO MEDIO) EN LA LOCALIDAD DE TOLOMBÓN,PROVINCIA DE SALTA. FACENA-UNNE y CECOAL-CONICET. Ruta 5, km 2,5-3400 Corrientes, Argentina.
Iruya Department ⓘ Los Alisos	*Woolley, A. R. (1987) Alkaline Rocks and Carbonatites of the World. Part 1: North and South America.*
Los Andes Department Tolar Grande ⓘ Rio Grande Cu-Au prospect	www.aldebaranresources.com (n.d.) https://www.aldebaranresources.com/projects/rio-grande/
ⓘ Tucumán Province	[var: Chromium-bearing Diopside] Hugo A. Peña (1970): Minerales y rocas de aplicación de la Provincia de Tucumán. Secretaría de Estado de Comercio, Industria y Minería. Dirección Provincial de Minas. Tucumán. República Argentina.
ⓘ Tafí del Valle Department	Raúl Jorge Tauber Larry
ⓘ Amaicha del Valle	Raúl JorgeTauber Larry
ⓘ Los Cardones	Raúl Jorge Tauber Larry
ⓘ El Remate	Raúl Jorge Tauber Larry
ⓘ Pucará de Los Cardones	R. J.Tauber Larry (2012). Visita al sector Pucará de Los Cardones, Departamento Tafí del Valle, Provincia de Tucumán.
ⓘ Los Zazos	Raúl Jorge Tauber Larry
Colalao del Valle Cerro Lomas Coloradas Estancia Anchilla ⓘ Estancia Anchilla Pegmatite District	Raúl J. Tauber Larry (2012).
ⓘ San Fenancio Mine	R. J. Tauber Larry (2012). Visita a los cuerpos pegmatíticos de Estancia Anchilla, Departamento Tafí del Valle, Provincia de Tucum´´an. R. J.Tauber Larry (2012). Visita a los cuerpos pegmatíticos de Estancia Anchilla, Departamento Tafí del Valle, Provincia de Tucumán.

Armenia
Kotayk Province Hrazdan ⓘ Hrazdan Iron-Ore project

Diopside

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