Enstatite
A valid IMA mineral species - grandfathered
This page kindly sponsored by Robert M. Hazen
About Enstatite
Formula:
Mg2Si2O6
Simplified: MgSiO3.
Colour:
White, yellowish green, brown, greenish white or grey, olive-green
Lustre:
Vitreous, Pearly
Hardness:
5 - 6
Specific Gravity:
3.2 - 3.9
Crystal System:
Orthorhombic
Member of:
Name:
From the Greek enstates - "opponent" for refractory nature under blowpipe flame.
Polymorph of:
Unique Identifiers
Mindat ID:
1384
Long-form identifier:
mindat:1:1:1384:6
GUID
(UUID V4):
(UUID V4):
7cd8d7a5-0b99-42d3-9a7a-f5e201bc9edd
IMA Classification of Enstatite
Approved, 'Grandfathered' (first described prior to 1959)
Classification of Enstatite
9.DA.05
9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
65.1.2.1
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
14.4.2
14 : Silicates not Containing Aluminum
4 : Silicates of Mg
14 : Silicates not Containing Aluminum
4 : Silicates of Mg
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
En | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
En | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277â279. |
En | 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 |
En | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185â187 doi:10.2138/am.2010.3371 |
En | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Enstatite
Vitreous, Pearly
Transparency:
Translucent, Opaque
Comment:
Pearly on cleavage
Colour:
White, yellowish green, brown, greenish white or grey, olive-green
Streak:
Grey to white
Hardness:
5 - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
Good on {210}
Good on {210}
Parting:
on {100} and {010}
Fracture:
Irregular/Uneven
Density:
3.2 - 3.9 g/cm3 (Measured) 3.189 g/cm3 (Calculated)
Optical Data of Enstatite
Type:
Biaxial (+)
RI values:
nα = 1.650 - 1.668 nβ = 1.652 - 1.673 nγ = 1.659 - 1.679
2V:
Measured: 54° to 90°, Calculated: 58° to 86°
Max Birefringence:
δ = 0.009 - 0.011
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v weak
Chemistry of Enstatite
Mindat Formula:
Mg2Si2O6
Simplified: MgSiO3.
Simplified: MgSiO3.
Elements listed:
Common Impurities:
Fe,Ca,Al,Co,Ni,Mn,Ti,Cr,Na,K
Crystallography of Enstatite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbca
Cell Parameters:
a = 18.23 Å, b = 8.84 Å, c = 5.19 Å
Ratio:
a:b:c = 2.062 : 1 : 0.587
Unit Cell V:
836.39 Ă
Âł (Calculated from Unit Cell)
Z:
8
Morphology:
Prismatic crystals, common forms include {100}, {010}, {100}, {210}, {101}, {111}, {211}; frequently striated // [001]
Twinning:
The often reported "Simple and lamellar twinning on {100}" is no twinning (the symmetry plane is part of the crystal structure). Twinning may be confused with exsolution lamellae.
Crystallographic forms of Enstatite
Crystal Atlas:
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0001201 | Enstatite | Carlson W D, Swinnea J S, Miser D E (1988) Stability of orthoenstatite at high temperature and low pressure American Mineralogist 73 1255-1263 | 1988 | 0 | 293 | ||
0001244 | Enstatite | Angel R J, Gasparik T, Finger L W (1989) Crystal structure of a Cr-bearing pyroxene American Mineralogist 74 599-603 | 1989 | 0 | 293 | ||
0001644 | Enstatite | Hugh-Jones D A, Angel R J (1994) A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa American Mineralogist 79 405-410 | 1994 | 0 | 293 | ||
0001645 | Enstatite | Hugh-Jones D A, Angel R J (1994) A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa American Mineralogist 79 405-410 | 1994 | 1.04 | 293 | ||
0001646 | Enstatite | Hugh-Jones D A, Angel R J (1994) A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa American Mineralogist 79 405-410 | 1994 | 1.95 | 293 | ||
0001647 | Enstatite | Hugh-Jones D A, Angel R J (1994) A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa American Mineralogist 79 405-410 | 1994 | 3.27 | 293 | ||
0001648 | Enstatite | Hugh-Jones D A, Angel R J (1994) A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa American Mineralogist 79 405-410 | 1994 | 4.09 | 293 | ||
0001649 | Enstatite | Hugh-Jones D A, Angel R J (1994) A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa American Mineralogist 79 405-410 | 1994 | 4.95 | 293 | ||
0001650 | Enstatite | Hugh-Jones D A, Angel R J (1994) A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa American Mineralogist 79 405-410 | 1994 | 5.85 | 293 | ||
0001651 | Enstatite | Hugh-Jones D A, Angel R J (1994) A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa American Mineralogist 79 405-410 | 1994 | 7 | 293 | ||
0001652 | Enstatite | Hugh-Jones D A, Angel R J (1994) A compressional study of MgSiO3 orthoenstatite up to 8.5 GPa American Mineralogist 79 405-410 | 1994 | 8.1 | 293 | ||
0001693 | Enstatite | Yang H, Ghose S (1995) A transitional structural state and anomalous Fe-Mg order-disorder in Mg-rich orthopyroxene, (Mg0.75Fe0.25)2Si2O6 American Mineralogist 80 9-20 | 1995 | 0 | 293 | ||
0001694 | Enstatite | Yang H, Ghose S (1995) A transitional structural state and anomalous Fe-Mg order-disorder in Mg-rich orthopyroxene, (Mg0.75Fe0.25)2Si2O6 American Mineralogist 80 9-20 | 1995 | 0 | 1000 | ||
0001695 | Enstatite | Yang H, Ghose S (1995) A transitional structural state and anomalous Fe-Mg order-disorder in Mg-rich orthopyroxene, (Mg0.75Fe0.25)2Si2O6 American Mineralogist 80 9-20 | 1995 | 0 | 1100 | ||
0001696 | Enstatite | Yang H, Ghose S (1995) A transitional structural state and anomalous Fe-Mg order-disorder in Mg-rich orthopyroxene, (Mg0.75Fe0.25)2Si2O6 American Mineralogist 80 9-20 | 1995 | 0 | 1200 | ||
0001697 | Enstatite | Yang H, Ghose S (1995) A transitional structural state and anomalous Fe-Mg order-disorder in Mg-rich orthopyroxene, (Mg0.75Fe0.25)2Si2O6 American Mineralogist 80 9-20 | 1995 | 0 | 1300 | ||
0001755 | Enstatite | Domeneghetti M C, Molin G M, Stimpfl M, Tribaudino M (1995) Orthopyroxene from the Serra de Mage meteorite: Structure refinement and estimation of C2/c pyroxene contributions to apparent Pbca diffraction violations American Mineralogist 80 923-929 | 1995 | 0 | 293 | ||
0001756 | Enstatite | Domeneghetti M C, Molin G M, Stimpfl M, Tribaudino M (1995) Orthopyroxene from the Serra de Mage meteorite: Structure refinement and estimation of C2/c pyroxene contributions to apparent Pbca diffraction violations American Mineralogist 80 923-929 | 1995 | 0 | 293 | ||
0004153 | Enstatite | Nestola F, Gatta G D, Ballaran T B (2006) The effect of Ca substitution on the elastic and structural behavior of orthoenstatite American Mineralogist 91 809-815 | 2006 | synthetic sample | 0.0001 | 293 | |
0004154 | Enstatite | Nestola F, Gatta G D, Ballaran T B (2006) The effect of Ca substitution on the elastic and structural behavior of orthoenstatite American Mineralogist 91 809-815 | 2006 | synthetic sample | 1.76 | 293 | |
0004155 | Enstatite | Nestola F, Gatta G D, Ballaran T B (2006) The effect of Ca substitution on the elastic and structural behavior of orthoenstatite American Mineralogist 91 809-815 | 2006 | synthetic sample | 3.36 | 293 | |
0004156 | Enstatite | Nestola F, Gatta G D, Ballaran T B (2006) The effect of Ca substitution on the elastic and structural behavior of orthoenstatite American Mineralogist 91 809-815 | 2006 | synthetic sample | 3.94 | 293 | |
0004157 | Enstatite | Nestola F, Gatta G D, Ballaran T B (2006) The effect of Ca substitution on the elastic and structural behavior of orthoenstatite American Mineralogist 91 809-815 | 2006 | synthetic sample | 6.25 | 293 | |
0004362 | Enstatite | Smyth J R, Mierdel K, Keppler H, Langenhorst F, Dubrovinsky L, Nestola F (2007) Crystal chemistry of hydration in aluminous orthopyroxene American Mineralogist 92 973-976 | 2007 | synthetic | 0 | 293 | |
0019068 | Enstatite | Zhang J S, Dera P, Bass J D (2012) A new high-pressure phase transition in natural Fe-bearing orthoenstatite American Mineralogist 97 1070-1074 | 2012 | San Carlos, Arizona, USA | 12.66 | 293 | |
0019069 | Enstatite | Zhang J S, Dera P, Bass J D (2012) A new high-pressure phase transition in natural Fe-bearing orthoenstatite American Mineralogist 97 1070-1074 | 2012 | San Carlos, Arizona, USA | 14.26 | 293 | |
0020252 | Enstatite | Jacob D, Palatinus L, Cuvillier P, Leroux H, Domeneghetti C, Camara F (2013) Ordering state in orthopyroxene as determined by precession electron diffraction American Mineralogist 98 1526-1534 | 2013 | Wilson Terrane, North Victoria Land, Antarctica | 0 | 293 | |
0020253 | Enstatite | Jacob D, Palatinus L, Cuvillier P, Leroux H, Domeneghetti C, Camara F (2013) Ordering state in orthopyroxene as determined by precession electron diffraction American Mineralogist 98 1526-1534 | 2013 | Wilson Terrane, North Victoria Land, Antarctica | 0 | 293 | |
0020254 | Enstatite | Jacob D, Palatinus L, Cuvillier P, Leroux H, Domeneghetti C, Camara F (2013) Ordering state in orthopyroxene as determined by precession electron diffraction American Mineralogist 98 1526-1534 | 2013 | Wilson Terrane, North Victoria Land, Antarctica | 0 | 293 | |
0020255 | Enstatite | Jacob D, Palatinus L, Cuvillier P, Leroux H, Domeneghetti C, Camara F (2013) Ordering state in orthopyroxene as determined by precession electron diffraction American Mineralogist 98 1526-1534 | 2013 | Wilson Terrane, North Victoria Land, Antarctica | 0 | 293 | |
0005139 | Enstatite | Hawthorne F C, Ito J (1977) Synthesis and crystal-structure refinement of transition-metal orthopyroxenes I: Orthoenstatite and (Mg, Mn, Co) orthopyroxene The Canadian Mineralogist 15 321-338 | 1977 | 0 | 293 | ||
0005140 | Enstatite | Hawthorne F C, Ito J (1977) Synthesis and crystal-structure refinement of transition-metal orthopyroxenes I: Orthoenstatite and (Mg, Mn, Co) orthopyroxene The Canadian Mineralogist 15 321-338 | 1977 | 0 | 293 | ||
0006054 | Enstatite | 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 | |
0006055 | Enstatite | 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 | |
0006929 | Enstatite | Tribaudino M, Nestola F (2002) Average and local structure in P2_1/c clinopyroxenes along the join diopside-enstatite (CaMgSi2O6-Mg2Si2O6) European Journal of Mineralogy 14 549-555 | 2002 | 0 | 293 | ||
0006930 | Enstatite | Tribaudino M, Nestola F (2002) Average and local structure in P2_1/c clinopyroxenes along the join diopside-enstatite (CaMgSi2O6-Mg2Si2O6) European Journal of Mineralogy 14 549-555 | 2002 | 0 | 293 | ||
0006931 | Enstatite | Tribaudino M, Nestola F (2002) Average and local structure in P2_1/c clinopyroxenes along the join diopside-enstatite (CaMgSi2O6-Mg2Si2O6) European Journal of Mineralogy 14 549-555 | 2002 | 0 | 293 | ||
0006932 | Enstatite | Tribaudino M, Nestola F (2002) Average and local structure in P2_1/c clinopyroxenes along the join diopside-enstatite (CaMgSi2O6-Mg2Si2O6) European Journal of Mineralogy 14 549-555 | 2002 | 0 | 293 | ||
0006978 | Enstatite | Nestola F, Tribaudino M (2003) The structure of Pbca orthopyroxenes along the join diopside-enstatite (CaMgSi2O6-Mg2Si2O6) European Journal of Mineralogy 15 365-371 | 2003 | 0 | 293 | ||
0006979 | Enstatite | Nestola F, Tribaudino M (2003) The structure of Pbca orthopyroxenes along the join diopside-enstatite (CaMgSi2O6-Mg2Si2O6) European Journal of Mineralogy 15 365-371 | 2003 | 0 | 293 | ||
0007358 | Enstatite | Ohashi Y (1984) Polysynthetically-twinned structures of enstatite and wollastonite Physics and Chemistry of Minerals 10 217-229 | 1984 | 0 | 293 | ||
0007919 | Enstatite | Yang H, Ghose S (1995) High temperature single crystal X-ray diffraction studies of the ortho-proto phase transition in enstatite, Mg2Si2O6 at 1360 K Physics and Chemistry of Minerals 22 300-310 | 1995 | 0 | 293 | ||
0007920 | Enstatite | Yang H, Ghose S (1995) High temperature single crystal X-ray diffraction studies of the ortho-proto phase transition in enstatite, Mg2Si2O6 at 1360 K Physics and Chemistry of Minerals 22 300-310 | 1995 | 0 | 293 | ||
0007921 | Enstatite | Yang H, Ghose S (1995) High temperature single crystal X-ray diffraction studies of the ortho-proto phase transition in enstatite, Mg2Si2O6 at 1360 K Physics and Chemistry of Minerals 22 300-310 | 1995 | 0 | 293 | ||
0007922 | Enstatite | Yang H, Ghose S (1995) High temperature single crystal X-ray diffraction studies of the ortho-proto phase transition in enstatite, Mg2Si2O6 at 1360 K Physics and Chemistry of Minerals 22 300-310 | 1995 | 0 | 293 | ||
0008009 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 0 | 293 | ||
0008010 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 1.54 | 293 | ||
0008011 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 2.5 | 293 | ||
0008012 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 3.17 | 293 | ||
0008013 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 4.14 | 293 | ||
0008014 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 4.76 | 293 | ||
0008015 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 5.77 | 293 | ||
0008016 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 6.59 | 293 | ||
0008017 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 7.5 | 293 | ||
0008018 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 0 | 293 | ||
0008019 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 1.04 | 293 | ||
0008020 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 1.9 | 293 | ||
0008021 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 3 | 293 | ||
0008022 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 4.03 | 293 | ||
0008023 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 4.93 | 293 | ||
0008024 | Enstatite | Hugh-Jones D A, Chopelas A, Angel R J (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes Physics and Chemistry of Minerals 24 301-310 | 1997 | 6.01 | 293 | ||
0009041 | Enstatite | Camara F, Iezzi G, Tiepolo M, Oberti R (2006) The crstal chemistry of lithium and Fe3+ in synthetic orthopyroxene Physics and Chemistry of Minerals 33 475-483 | 2006 | 0 | 293 | ||
0009042 | Enstatite | Camara F, Iezzi G, Tiepolo M, Oberti R (2006) The crstal chemistry of lithium and Fe3+ in synthetic orthopyroxene Physics and Chemistry of Minerals 33 475-483 | 2006 | 0 | 293 | ||
0009043 | Enstatite | Camara F, Iezzi G, Tiepolo M, Oberti R (2006) The crstal chemistry of lithium and Fe3+ in synthetic orthopyroxene Physics and Chemistry of Minerals 33 475-483 | 2006 | 0 | 293 | ||
0009057 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009058 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009059 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009060 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009061 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009062 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009063 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009064 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009065 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009066 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009067 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0009068 | Enstatite | Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G (2007) High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Physics and Chemistry of Minerals 34 185-200 | 2007 | 0 | 293 | ||
0018104 | Enstatite | Warren B, Modell D (1930) The structure of enstatite, MgSiO3 Zeitschrift fur Kristallographie 75 1-14 | 1930 | 0 | 293 | ||
0010680 | Enstatite | Morimoto N, Koto K (1969) The crystal structure of orthoenstatite Zeitschrift fur Kristallographie 129 65-83 | 1969 | Bishopville meteorite | 0 | 293 | |
0014680 | Enstatite | Angel R J, Chopelas A, Ross N L (1992) Stability of high-density clinoenstatite at upper-mantle pressures Nature 358 322-324 | 1992 | 7.93 | 293 | ||
0017925 | Enstatite | Takane K (1932) Crystal Structure of Bronzite from Chichi-jiama in the Bonin Islands _cod_database_code 1011018 Proceedings of the Japan Academy 8 308-311 | 1932 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Image Loading
Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.175 Ă | (100) |
2.878 Ă | (55) |
2.540 Ă | (25) |
1.488 Ă | (25) |
2.497 Ă | (18) |
2.477 Ă | (18) |
1.473 Ă | (18) |
Comments:
Bamble, Norway. Data from Lee and Heuer (1987).
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Pre-terrestrial "Ur-minerals" | >4.57 |
1 : Stellar atmosphere condensates | |
Stage 1: Primary nebular phases | 4.567-4.561 |
4 : Primary chondrule phases | 4.566â4.561 |
Stage 2: Planetesimal differentiation and alteration | 4.566-4.550 |
5 : Primary asteroid phases | 4.566â4.560 |
6 : Secondary asteroid phases | 4.566-4.560 |
Stage 3a: Earthâs earliest Hadean crust | >4.50 |
7 : Ultramafic igneous rocks | |
Stage 3b: Earthâs earliest hydrosphere | >4.45 |
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33) | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
36 : Carbonatites, kimberlites, and related igneous rocks | |
Stage 5: Initiation of plate tectonics | <3.5-2.5 |
38 : Ophiolites | |
39 : High-đ metamorphism (blueschist, eclogite, ultrahigh đ facies) | |
40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Geological Setting:
Magmatic mafic rocks
Synonyms of Enstatite
Other Language Names for Enstatite
German:Amblystegit
Chladnit
Cladnit
Enstadit
Enstatit
Ficinit
O-enstatit
Orthobronzit
Orthoenstatit
Paulit
Peckhamit
Protobastit
Shepardit
Victorit
Chladnit
Cladnit
Enstadit
Enstatit
Ficinit
O-enstatit
Orthobronzit
Orthoenstatit
Paulit
Peckhamit
Protobastit
Shepardit
Victorit
Russian:ĐĐœŃŃĐ°ŃĐžŃ
Simplified Chinese:éĄœç«èŸçł
éĄœèŸçł
éĄœèŸçł
Spanish:Amblystegita
Chladnita
Enstadita
Enstatita
Ficinita
Orthobronzita
Orthoenstatita
Paulita
Peckhamita
Protobastita
Shepardita
Victorita
Chladnita
Enstadita
Enstatita
Ficinita
Orthobronzita
Orthoenstatita
Paulita
Peckhamita
Protobastita
Shepardita
Victorita
Traditional Chinese:é ç«èŒçł
é èŒçł
é èŒçł
Varieties of Enstatite
Bronzite | An iron(II)-bearing variety of enstatite. The iron-dominant member is ferrosilite. See also the obsolete hypersthene, a mid-way member between enstatite and ferrosilite. |
Lime-Bronzite | A Calcian Bronzite |
Vanadinbronzite | A vanadium-bearing variety of enstatite. Originally reported from Bracco, Genova Province, Liguria, Italy. |
Relationship of Enstatite to other Species
Member of:
Other Members of this group:
Donpeacorite | (Mn,Mg)MgSi2O6 | Orth. mmm (2/m 2/m 2/m) : Pbca |
Ferrosilite | Fe2+2Si2O6 | Orth. mmm (2/m 2/m 2/m) : Pbca |
Protoenstatite | Mg2Si2O6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
106 photos of Enstatite associated with Pseudobrookite | Fe2TiO5 |
87 photos of Enstatite associated with Hematite | Fe2O3 |
69 photos of Enstatite associated with Ilmenite | Fe2+TiO3 |
61 photos of Enstatite associated with Tridymite | SiO2 |
36 photos of Enstatite associated with Magnetite | Fe2+Fe3+2O4 |
30 photos of Enstatite associated with Phlogopite | KMg3(AlSi3O10)(OH)2 |
29 photos of Enstatite associated with Sanidine | K(AlSi3O8) |
25 photos of Enstatite associated with Armalcolite-Pseudobrookite Series | |
24 photos of Enstatite associated with Fluorapatite | Ca5(PO4)3F |
21 photos of Enstatite associated with Zircon | Zr(SiO4) |
Related Minerals - Strunz-mindat Grouping
9.DA. | Protoenstatite | Mg2Si2O6 |
9.DA. | Ryabchikovite | CuMgSi2O6 |
9.DA. | Colomeraite | NaTi3+Si2O6 |
9.DA.05 | Donpeacorite | (Mn,Mg)MgSi2O6 |
9.DA.05 | Ferrosilite | Fe2+2Si2O6 |
9.DA.10 | Clinoenstatite | MgSiO3 |
9.DA.10 | Clinoferrosilite | Fe2+2Si2O6 |
9.DA.10 | Kanoite | Mn2+(Mg,Mn2+)Si2O6 |
9.DA.10 | Pigeonite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
9.DA.15 | Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
9.DA.15 | Diopside | CaMgSi2O6 |
9.DA.15 | Esseneite | CaFe3+[AlSiO6] |
9.DA.15 | Hedenbergite | CaFe2+Si2O6 |
9.DA.15 va | Jeffersonite | Ca(Mn,Zn,Fe)Si2O6 |
9.DA.15 | Johannsenite | CaMn2+Si2O6 |
9.DA.15 | Petedunnite | Ca(Zn,Mn2+,Mg,Fe2+)Si2O6 |
9.DA.15 | Davisite | CaScAlSiO6 |
9.DA.15 | Kushiroite | CaAl[AlSiO6] |
9.DA.15 | Grossmanite | CaTi3+ AlSiO6 |
9.DA.20 | Aegirine-augite | (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 |
9.DA.20 | Omphacite | (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6 |
9.DA.25 | Aegirine | NaFe3+Si2O6 |
9.DA.25 | Jadeite | Na(Al,Fe3+)Si2O6 |
9.DA.25 | Jervisite | NaSc3+Si2O6 |
9.DA.25 | Kosmochlor | NaCrSi2O6 |
9.DA.25 | Namansilite | NaMn3+Si2O6 |
9.DA.25 | Natalyite | NaV3+Si2O6 |
9.DA.25 | Tissintite | (Ca,Na,â»)AlSi2O6 |
9.DA.30 | Spodumene | LiAlSi2O6 |
9.DA.35 | Hiroseite | FeSiO3 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Enstatite in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Enstatite
mindat.org URL:
https://www.mindat.org/min-1384.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Enstatite
Reference List:
Localities for Enstatite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
All localities listed without proper references should be considered as questionable.
Algeria | |
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Antarctica | |
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Rowley, P.D., Thomson, J.W., Smellie, J.L., Laudon, T.S., La Prade, K.E., LeMasurier, W.E. (1990) C. Alexander Island, Palmer Island, and Ellsworth Land. In Volcanoes of the Antarctic Plate and Southern Oceans Vol. 48 - Antarctic Research Series. American Geophysical Union. p.256-301. doi:10.1029/AR048pp.280-282 | |
Argentina | |
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Atlantic Ocean | |
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Azerbaijan | |
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Burkina Faso | |
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Central African Republic | |
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Chile | |
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China | |
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| Chen, Mi-Mi, Tian, Wei, Suzuki, Katsuhiko, Tejada, M.-L.-G., Liu, Feng-Lin, Senda, Ryoko, Wei, Chun-Jing, Chen, Bin, Chu, Zhu-Yin (2014) Peridotite and pyroxenite xenoliths from Tarim, NW China: Evidences for melt depletion and mantle refertilization in the mantle source region of the Tarim flood basalt. Lithos, 204. 97-111 doi:10.1016/j.lithos.2014.01.005 |
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| Wang, Zhaolin, Yan, Jiayong, Tang, Hejun, Xiao, Yandong, Deng, Zhen, Meng, Guixiang, Sun, Hui, Qi, Yaogang, Yuan, Lulu (2023) Geochemistry and Mineralogy of Peridotites and Chromitites from Zhaheba Ophiolite Complex, Eastern Junggar, NW China: Implications for the Tectonic Environment and Genesis. Minerals, 13 (8) doi:10.3390/min13081074 |
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Costa Rica | |
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Croatia | |
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Cuba | |
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Czech Republic | |
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Dominican Republic | |
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East Timor | |
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Egypt | |
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Estonia | |
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Eswatini | |
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Finland | |
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France | |
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Georgia | |
| Ćrodek, Dorota, Juroszek, RafaĆ, KrĂŒger, Hannes, KrĂŒger, Biljana, Galuskina, Irina, Gazeev, Viktor (2018) New Occurrence of Rusinovite, Ca10(Si2O7)3Cl2: Composition, Structure and Raman Data of Rusinovite from Shadil-Khokh Volcano, South Ossetia and Bellerberg Volcano, Germany. Minerals, 8 (9) 399 doi:10.3390/min8090399 |
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Ghana | |
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Greenland | |
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Hungary | |
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India | |
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Indonesia | |
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Iran | |
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Italy | |
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Ivory Coast | |
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Japan | |
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Jordan | |
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Kenya | |
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Lesotho | |
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Libya | |
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Lithuania | |
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Madagascar | |
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Malawi | |
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Mali | |
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Mexico | |
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Mongolia | |
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Morocco | |
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Myanmar | |
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Namibia | |
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Nigeria | |
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North Africa | |
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Northwest Africa Meteorites | |
Norway | |
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| Grew, Edward S., Pertsev, Nikolai N., VrĂĄna, Stanislav, Yates, Martin G., Shearer, Charles K., Wiedenbeck, Michael (1998) Kornerupine parageneses in whiteschists and other magnesian rocks: is kornerupine + talc a high-pressure assemblage equivalent to tourmaline + orthoamphibole?. Contributions to Mineralogy and Petrology, 131 (1). 22-38 doi:10.1007/s004100050376 |
Oman | |
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Pacific Ocean | |
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Pakistan | |
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Papua New Guinea | |
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Peru | |
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Philippines | |
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Poland | |
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Portugal | |
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Republic of the Congo | |
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Romania | |
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Russia | |
| Kepezhinskas, Pavel, Berdnikov, Nikolai, Kepezhinskas, Nikita, Krutikova, Valeria, Astapov, Ivan (2023) MagmaticâHydrothermal Transport of Metals at Arc Plutonic Roots: Insights from the Ildeus MaficâUltramafic Complex, Stanovoy Suture Zone (Russian Far East) Minerals, 13 (7) 878 doi:10.3390/min13070878 |
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| Shchipalkina, Nadezhda V., Pekov, Igor V., Koshlyakova, Natalia N., Britvin, Sergey N., Zubkova, Natalia V., Varlamov, Dmitry A., Sidorov, Eugeny G. (2020) Unusual silicate mineralization in fumarolic sublimates of the Tolbachik volcano, Kamchatka, Russia â Part 2: Tectosilicates. European Journal of Mineralogy, 32 (1) 121-136 doi:10.5194/ejm-32-121-2020 Pekov, Igor V., Koshlyakova, Natalia N., Zubkova, Natalia V., Belakovskiy, Dmitry I., Vigasina, Marina F., Agakhanov, Atali A., Ksenofontov, Dmitry A., Turchkova, Anna G., Britvin, Sergey N., Sidorov, Evgeny G., Pushcharovsky, Dmitry Yu. (2022) A Natural VanadateâArsenate Isomorphous Series with Jeffbenite-Type Structure: New Fumarolic Minerals Udinaite, NaMg4(VO4)3, and Arsenudinaite, NaMg4(AsO4)3. Minerals, 12 (7) 850 doi:10.3390/min12070850 |
| Shchipalkina, Nadezhda V., Pekov, Igor V., Koshlyakova, Natalia N., Britvin, Sergey N., Zubkova, Natalia V., Varlamov, Dmitry A., Sidorov, Eugeny G. (2020) Unusual silicate mineralization in fumarolic sublimates of the Tolbachik volcano, Kamchatka, Russia â Part 1: Neso-, cyclo-, ino- and phyllosilicates. European Journal of Mineralogy, 32 (1) 101-119 doi:10.5194/ejm-32-101-2020 |
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Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar