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Strontiofluorite

A valid IMA mineral species

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Photos of Strontiofluorite (3)

Search Photos of Strontiofluorite

Edit Add Synonym Edit CIF structures Clear Cache

Strontiofluorite, etc.

Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Strontiofluorite, etc.

Bortolan quarry, Poços de Caldas, Minas Gerais, Brazil

Strontiofluorite, etc.

Bortolan quarry, Poços de Caldas, Minas Gerais, Brazil

Strontiofluorite, etc.

Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Strontiofluorite, etc.

Bortolan quarry, Poços de Caldas, Minas Gerais, Brazil

Strontiofluorite, etc.

Bortolan quarry, Poços de Caldas, Minas Gerais, Brazil

Strontiofluorite, etc.

Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Strontiofluorite, etc.

Bortolan quarry, Poços de Caldas, Minas Gerais, Brazil

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About StrontiofluoriteHide

Formula:

SrF₂

Colour:

pale gray

Lustre:

Greasy

Hardness:

Specific Gravity:

4.05

Crystal System:

Isometric

Member of:

Fluorite Group

Name:

to identify it as a Sr-dominant analogue of fluorite.

Type Locality:

ⓘ Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

Fluorite Group.

Unique IdentifiersHide

Mindat ID:

39548

Long-form identifier:

mindat:1:1:39548:1

GUID
(UUID V4):

8e617003-1565-4291-aeb6-ab15accf46f6

IMA Classification of StrontiofluoriteHide

IMA status:

Approved

Approval year:

2009

First published:

2010

Type description reference:

Yakovenchuk, V. N., Ivanyuk, G. Y., Pakhomovsky, Y. A., Selivanova, E. A., Korchak, J. A., Nikolaev, A. P. (2010) Strontiofluorite, SrF₂, a new mineral species from the Khibiny Massif, Kola Peninsula, Russia. The Canadian Mineralogist, 48 (6) 1487-1492 doi:10.3749/canmin.48.6.1487

Classification of StrontiofluoriteHide

Strunz-mindat (2024):

3.AB.25

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

Dana 8th ed.:

9.2.1.4

9 : NORMAL HALIDES
2 : AX₂

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

Physical Properties of StrontiofluoriteHide

Lustre:

Greasy

Transparency:

Translucent

Colour:

pale gray

Streak:

white

Hardness:

4 on Mohs scale

Tenacity:

Brittle

Cleavage:

Perfect
{111}

Fracture:

Step-Like

Density:

4.05 g/cm³ (Measured) 4.11 g/cm³ (Calculated)

Optical Data of StrontiofluoriteHide

Type:

Isotropic

RI values:

n = 1.438(2)

Birefringence:

Isotropic minerals have no birefringence

Surface Relief:

Moderate

Chemistry of StrontiofluoriteHide

Mindat Formula:

SrF₂

Elements listed:

F, Sr - search for minerals with similar chemistry

Crystallography of StrontiofluoriteHide

Crystal System:

Isometric

Class (H-M):

m3m (4/m 3 2/m) - Hexoctahedral

Space Group:

Fm3m

Cell Parameters:

a = 5.713(8) Å

Unit Cell V:

186.46 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)
0011721	Strontiofluorite	Wyckoff R W G (1963) Second edition. Interscience Publishers, New York, New York Fluorite structure Crystal Structures 1 239-444		1963		0	293
0011721	Strontiofluorite	Wyckoff R W G (1963) Second edition. Interscience Publishers, New York, New York Fluorite structure Crystal Structures 1 239-444		1963		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Strontiofluorite'
loop_
_publ_author_name
'Wyckoff R W G'
_journal_name_full 'Crystal Structures'
_journal_volume 1 
_journal_year 1963
_journal_page_first 239
_journal_page_last 444
_publ_section_title
;
 Second edition. Interscience Publishers, New York, New York
 Fluorite structure
;
_database_code_amcsd 0011721
_chemical_formula_sum 'Sr F2'
_cell_length_a 5.7996
_cell_length_b 5.7996
_cell_length_c 5.7996
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 195.072
_exptl_crystal_density_diffrn      4.277
_symmetry_space_group_name_H-M 'F m 3 m'
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  '-x,-y,-z'
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loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Sr   0.00000   0.00000   0.00000
F   0.25000   0.25000   0.25000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.324 Å	(100)
2.886 Å	(20)
2.029 Å	(90)
1.731 Å	(60)
1.434 Å	(20)
1.317 Å	(30)
1.172 Å	(50)
1.105 Å	(20)

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 StrontiofluoriteHide

Type Locality:

ⓘ Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia

General Appearance of Type Material:

cubo-octahedral crystals (up to 0.5 mm in diameter) and compact masses that cement fibrous aggregates of polezhaevaite-(Ce) in voids caused by leaching of burbankite crystals

Place of Conservation of Type Material:

Mineralogical Museum of St. Petersburg State University and of the Geological and Mineralogical Museum of the Geological Institute, Kola Science Centre, Russian Academy of Sciences in Apatity, Russia (catalogue no. 6455).

Geological Setting of Type Material:

sodalite – microcline – aegirine – natrolite lens about 3 m in diameter within apatite-rich urtite at Mt. Koashva. This lens is a product of hydrothermal “natrolitization” of a primary pegmatitic mineral assemblage.

Associated Minerals at Type Locality:

Villiaumite	Polezhaevaite-(Ce)	Lamprophyllite	Fluorite	Fluorapatite
Chlorbartonite	Burbankite	Astrophyllite

Reference:

Yakovenchuk, V.N., Ivanyuk, G.Y., Pakhomovsky, Y.A., Selivanova, E.A., Korchak, J.A., Nikolaev, A.P. (2010) Strontiofluorite, SrF2, a new mineral from the Khibiny Massif, Kola Peninsula, Russia. The Canadian Mineralogist: 48: 1487-1492.

Download:

https://rruff.info/rruff_1.0/uploads/CM48_1487.pdf

Synonyms of StrontiofluoriteHide

IMA2009-014

Relationship of Strontiofluorite to other SpeciesHide

Member of:

Fluorite Group

Other Members of this group:

Fluorite	CaF₂	Iso. m3m (4/m 3 2/m) : Fm3m
Fluorocronite	PbF₂	Iso. m3m (4/m 3 2/m) : Fm3m
Frankdicksonite	BaF₂	Iso. m3m (4/m 3 2/m) : Fm3m

Common AssociatesHide

Associated Minerals Based on Photo Data:

2 photos of Strontiofluorite associated with Polezhaevaite-(Ce)

NaSrCeF₆

Related Minerals - Strunz-mindat Grouping Hide

3.AB.	Fluorocronite	PbF₂	Iso. m3m (4/m 3 2/m) : Fm3m
3.AB.	Manuelarossiite	PbCaAlF₇	Mon. 2/m : B2/m
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.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	Gagarinite-(Ce)	Na(REE_xCa_1-x)(REE_yCa_1-y)F₆	Trig. 3 : P3
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)

Other InformationHide

Health Risks:

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

Internet Links for StrontiofluoriteHide

mindat.org URL:

https://www.mindat.org/min-39548.html
Please feel free to link to this page.

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External Links:

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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 StrontiofluoriteHide

Reference List:

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

Localities for StrontiofluoriteHide

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.


Brazil
Minas Gerais Poços de Caldas ⓘ Bortolan quarry	Azzi (2019)
ⓘ Poços de Caldas alkaline complex	Guarino et al. (2021)

Russia
Murmansk Oblast Khibiny Massif ⓘ Kitchepakhk Mountain	Yakovenchuk et al. (2010)
Koashva Mt ⓘ Koashva Open Pit (TL)	Yakovenchuk et al. (2010)

Strontiofluorite

About StrontiofluoriteHide

Unique IdentifiersHide

IMA Classification of StrontiofluoriteHide

Classification of StrontiofluoriteHide

Mineral SymbolsHide

Physical Properties of StrontiofluoriteHide

Optical Data of StrontiofluoriteHide

Chemistry of StrontiofluoriteHide

Crystallography of StrontiofluoriteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of StrontiofluoriteHide

Synonyms of StrontiofluoriteHide

Relationship of Strontiofluorite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for StrontiofluoriteHide

References for StrontiofluoriteHide

Localities for StrontiofluoriteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide