Gagarinite-(Ce): Mineral information, data and localities.

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Gagarinite-(Ce)

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Photos of Gagarinite-(Ce) (3)

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Gagarinite-(Ce)

Strange Lake complex, Canada

Gagarinite-(Ce)

Strange Lake complex, Canada

Gagarinite-(Ce)

Strange Lake complex, Canada

Gagarinite-(Ce)

Strange Lake complex, Canada

Gagarinite-(Ce)

Strange Lake complex, Canada

Gagarinite-(Ce)

Strange Lake complex, Canada

Gagarinite-(Ce)

Strange Lake complex, Canada

Gagarinite-(Ce)

Strange Lake complex, Canada

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About Gagarinite-(Ce)Hide

Yurii Alexeevich Gagarin - the first man visited space.

Formula:

Na(REE_xCa_1-x)(REE_yCa_1-y)F₆

Colour:

Colourless to light pink

Lustre:

Vitreous

Hardness:

3½

Specific Gravity:

4.44

Crystal System:

Trigonal

Name:

Originally named zajacite-(Ce) for Dr. Ihor Stephan Zajac (1935- ), the geologist who lead the exploration group that discovered the Strange Lake deposit and who first recognized the mineral. Later renamed to gargarinite-(Ce), for the relationship to gagarinite-(Y) and cerium as the dominant rare-earth element. The root name is for Yuri Alexeevich Gagarin (9 March 1934, Klushino, Smolensk Oblast, Soviet Union - 27 March 1968, Novosyolovo, Soviet Union), cosmonaut and the first person in space.

Type Locality:

ⓘ Strange Lake complex (Lac Brisson complex), Canada

Renamed in 2010 (IMA 10-C); the original name "zajacite-(Ce)" is discredited.

Ce-analogue of gagarinite-(Y).

Classification of Gagarinite-(Ce)Hide

IMA status:

Approved

IMA status notes:

Renamed by the IMA

First published:

1996

Strunz-mindat (2023):

3.AB.35

3 : HALIDES
A : Simple halides, without H₂O
B : M:X = 1:2

Dana 8th ed.:

11.5.6.2

11 : HALIDE COMPLEXES
5 : A_mBX₆

Mineral SymbolsHide

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

Symbol	Source	Reference
Gag-Ce	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of Gagarinite-(Ce)Hide

Pronunciation:

Play	Recorded by	Country
	Jolyon & Katya Ralph	United Kingdom

Physical Properties of Gagarinite-(Ce)Hide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

Colourless to light pink

Streak:

White

Hardness:

3½ on Mohs scale

Tenacity:

Brittle

Cleavage:

None Observed

Fracture:

Conchoidal

Density:

4.44(1) g/cm³ (Measured)

Comment:

Measured witha Berman balance

Optical Data of Gagarinite-(Ce)Hide

Type:

Uniaxial (+)

RI values:

n_ω = 1.483(1) n_ε = 1.503(1)

Max Birefringence:

δ = 0.020

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

Surface Relief:

Moderate

Pleochroism:

Non-pleochroic

Chemical Properties of Gagarinite-(Ce)Hide

Formula:

Na(REE_xCa_1-x)(REE_yCa_1-y)F₆

IMA Formula:

NaCaCeF₆

Elements listed:

Ca, F, Na - search for minerals with similar chemistry

Crystallography of Gagarinite-(Ce)Hide

Crystal System:

Trigonal

Class (H-M):

3 - Rhombohedral

Space Group:

Cell Parameters:

a = 6.099(1) Å, c = 11.064(2) Å

Ratio:

a:c = 1 : 1.814

Unit Cell V:

356.42 Å³ (Calculated from Unit Cell)

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	Link	Year	Locality	Pressure (GPa)	Temp (K)
0018644	Gagarinite-(Ce)	Sciberras M J, Leverett P, Williams P A, Hibbs D E, Roberts A C, Grice J D (2011) The single-crystal X-ray structure of gagarinite-(Ce) The Canadian Mineralogist 49 1111-1114		2011	Strange Lake deposit, Quebec-Labrador, Canada	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Gagarinite-(Ce)'
loop_
_publ_author_name
'Sciberras M J'
'Leverett P'
'Williams P A'
'Hibbs D E'
'Roberts A C'
'Grice J D'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 49 
_journal_year 2011
_journal_page_first 1111
_journal_page_last 1114
_publ_section_title
;
 The single-crystal X-ray structure of gagarinite-(Ce)
;
_database_code_amcsd 0018644
_chemical_compound_source 'Strange Lake deposit, Quebec-Labrador, Canada'
_chemical_formula_sum 'Ce.275 La.143 Nd.099 Y.044 Gd.033 Sm.011 Dy.006 Ca.45 Na.45 F3'
_cell_length_a 6.0861
_cell_length_b 6.0861
_cell_length_c 3.6810
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 118.080
_exptl_crystal_density_diffrn      4.775
_symmetry_space_group_name_H-M 'P 63/m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x+y,-x,1/2-z'
  'x-y,x,1/2+z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  'x-y,x,-z'
  '-x+y,-x,z'
  '-y,x-y,1/2-z'
  'y,-x+y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Ce   0.66667   0.33333   0.25000   0.27500   0.00600
La   0.66667   0.33333   0.25000   0.14300   0.00600
Nd   0.66667   0.33333   0.25000   0.09900   0.00600
Y   0.66667   0.33333   0.25000   0.04400   0.00600
Gd   0.66667   0.33333   0.25000   0.03300   0.00600
Sm   0.66667   0.33333   0.25000   0.01100   0.00600
Dy   0.66667   0.33333   0.25000   0.00600   0.00600
Ca   0.66667   0.33333   0.25000   0.45000   0.00600
Na   0.00000   0.00000   0.00000   0.45000   0.01200
F   0.30460   0.38900   0.25000   1.00000   0.00800
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
Ce 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000
La 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000
Nd 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000
Y 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000
Gd 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000
Sm 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000
Dy 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000
Ca 0.00700 0.00700 0.00300 0.00350 0.00000 0.00000
Na 0.00200 0.00200 0.03300 0.00100 0.00000 0.00000
F 0.00800 0.00800 0.00800 0.00400 0.00000 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.036 Å	(100)
1.757 Å	(80)
5.29 Å	(70)
2.146 Å	(70)
1.152 Å	(40)
0.9189 Å	(40)
2.351 Å	(30)
1.361 Å	(30)
1.047 Å	(30)
0.9775 Å	(30)
0.9635 Å	(30)
1.273 Å	(25)
0.9419 Å	(25)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4b: Highly evolved igneous rocks	>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of Gagarinite-(Ce)Hide

Type Locality:

ⓘ Strange Lake complex (Lac Brisson complex), Canada

General Appearance of Type Material:

Anhedral grains, 1-2 mm across.

Place of Conservation of Type Material:

1) National Mineral Collection, Geological Survey of Canada, Ottawa (NMC 67314).
2) A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.

Geological Setting of Type Material:

Hypersolvus granite

Associated Minerals at Type Locality:

Reference:

Jambor, J.L., Roberts, A.C., Owens, D.R., Grice, J.D. (1996) Zajacite-(Ce), a new rare-earth fluoride from the Strange Lake deposit, Quebec-Labrador. The Canadian Mineralogist: 34: 1299-1304.

Download:

https://rruff.info/rruff_1.0/uploads/CM34_1299.pdf

Synonyms of Gagarinite-(Ce)Hide

IMA1993-038

Zajacite-(Ce)

Gagarinite (in part)

Other Language Names for Gagarinite-(Ce)Hide

German:Zajacit-(Ce)

Related Minerals - Strunz-mindat Grouping Hide

3.AB.	Fluorocronite	PbF₂	Iso. m3m (4/m 3 2/m) : Fm3m
3.AB.05	Tolbachite	CuCl₂	Mon. 2/m : B2/m
3.AB.10	Coccinite	HgI₂	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/nmc
3.AB.15	Sellaite	MgF₂	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mnm
3.AB.20	Chloromagnesite	MgCl₂	Trig. 3m (3 2/m) : R3m
3.AB.20	Lawrencite	(Fe²⁺,Ni)Cl₂	Trig. 3m (3 2/m) : R3m
3.AB.20	Scacchite	MnCl₂	Trig. 3m (3 2/m) : R3m
3.AB.25	Fluorite	CaF₂	Iso. m3m (4/m 3 2/m) : Fm3m
3.AB.25	Frankdicksonite	BaF₂	Iso. m3m (4/m 3 2/m) : Fm3m
3.AB.25	Strontiofluorite	SrF₂	Iso. m3m (4/m 3 2/m) : Fm3m
3.AB.30	Tveitite-(Y)	(Y, Na)₆Ca₆Ca₆(Ca,Na)F₄₂	Trig. 3 : R3
3.AB.35	Gagarinite-(Y)	NaCaYF₆	Hex. 6/m : P6₃/m
3.AB.35	Polezhaevaite-(Ce)	NaSrCeF₆	Hex. 6/m : P6₃/m
3.AB.37	Calcioaravaipaite	PbCa₂AlF₉	Tric. 1 : P1
3.AB.85	Cotunnite	PbCl₂	Orth. mmm (2/m 2/m 2/m)

Fluorescence of Gagarinite-(Ce)Hide

In UV light:

Not fluorescent

Other InformationHide

Notes:

Insoluble in water, unreactive in cold, dilute HCl, and is slowly dissolved by hot HCl.

Health Risks:

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

References for Gagarinite-(Ce)Hide

Reference List:

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)

Jambor, J.L., Roberts, A.C., Owens, D.R., Grice, J.D. (1996) Zajacite-(Ce), a new rare-earth fluoride from the Strange Lake deposit, Quebec-Labrador. The Canadian Mineralogist: 34: 1299-1304. (as zajacite-(Ce))

Jambor, J.L., Pertsev, N.N., Roberts, A.C. (1997) New mineral names. American Mineralogist: 82: 1038-1041.

Sciberras, M.J., Leverett, P., Williams, P.A., Hibbs, D.E., Roberts, A.C., Grice, J.D. (2011) The single-crystal X-ray study of gagarinite-(Ce). The Canadian Mineralogist: 49: 1111-1114.

Internet Links for Gagarinite-(Ce)Hide

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https://www.mindat.org/min-7383.html
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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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Localities for Gagarinite-(Ce)Hide

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

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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.


Canada (TL)
ⓘ Strange Lake complex (Lac Brisson complex) (TL)	Jambor, J.L., Roberts, A.C., Owens, D.R., Grice, J.D. (1996) Zajacite-(Ce), a new rare-earth fluoride from the Strange Lake deposit, Quebec-Labrador. The Canadian Mineralogist: 34: 1299-1304.; Jambor, J.L., Pertsev, N.N., Roberts, A.C. (1997) New mineral names. American Mineralogist: 82: 1038-1041.; Sciberras, M.J., Leverett, P., Williams, P.A., Hibbs, D.E., Roberts, A.C., Grice, J.D. (2011) The single-crystal X-ray study of gagarinite-(Ce). The Canadian Mineralogist: 49: 1111-1114.

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Gagarinite-(Ce)

About Gagarinite-(Ce)Hide

Classification of Gagarinite-(Ce)Hide

Mineral SymbolsHide

Pronunciation of Gagarinite-(Ce)Hide

Physical Properties of Gagarinite-(Ce)Hide

Optical Data of Gagarinite-(Ce)Hide

Chemical Properties of Gagarinite-(Ce)Hide

Crystallography of Gagarinite-(Ce)Hide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of Gagarinite-(Ce)Hide

Synonyms of Gagarinite-(Ce)Hide

Other Language Names for Gagarinite-(Ce)Hide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of Gagarinite-(Ce)Hide

Other InformationHide

References for Gagarinite-(Ce)Hide

Internet Links for Gagarinite-(Ce)Hide

Localities for Gagarinite-(Ce)Hide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide