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Strontiofluorite

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Formula:
SrF2
Colour:
pale gray
Lustre:
Greasy
Hardness:
4
Specific Gravity:
4.05
Crystal System:
Isometric
Member of:
Name:
to identify it as a Sr-dominant analogue of fluorite.
Hide all sections | Show all sections

Classification of StrontiofluoriteHide

Approved
Approval Year:
2009
3.AB.25

3 : HALIDES
A : Simple halides, without H2O
B : M:X = 1:2
9.2.1.4

9 : NORMAL HALIDES
2 : AX2

Physical Properties of StrontiofluoriteHide

Greasy
Transparency:
Translucent
Colour:
pale gray
Streak:
white
Hardness:
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)
Max Birefringence:
δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:
Moderate

Chemical Properties of StrontiofluoriteHide

Formula:
SrF2

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 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.324 (100)
2.886 (20)
2.029 (90)
1.731 (60)
1.434 (20)
1.317 (30)
1.172 (50)
1.105 (20)

Type Occurrence of StrontiofluoriteHide

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:

Synonyms of StrontiofluoriteHide

Other Language Names for StrontiofluoriteHide

Relationship of Strontiofluorite to other SpeciesHide

Member of:
Other Members of this group:
FluoriteCaF2Iso. m3m (4/m 3 2/m) : Fm3m
FluorocronitePbF2Iso. m3m (4/m 3 2/m) : Fm3m

Related Minerals - Nickel-Strunz GroupingHide

3.AB.FluorocronitePbF2Iso. m3m (4/m 3 2/m) : Fm3m
3.AB.05TolbachiteCuCl2Mon.
3.AB.10CocciniteHgI2Tet.
3.AB.15SellaiteMgF2Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
3.AB.20ChloromagnesiteMgCl2Hex.
3.AB.20Lawrencite(Fe2+,Ni)Cl2Trig. 3m (3 2/m) : R3m
3.AB.20ScacchiteMnCl2Trig. 3m (3 2/m) : R3m
3.AB.25FluoriteCaF2Iso. m3m (4/m 3 2/m) : Fm3m
3.AB.25FrankdicksoniteBaF2Iso. m3m (4/m 3 2/m) : Fm3m
3.AB.30Tveitite-(Y)(Y, Na)6Ca6Ca6F42Trig. 3 : R3
3.AB.35Gagarinite-(Y)NaCaYF6Hex. 6/m : P63/m
3.AB.35Gagarinite-(Ce)Na(REExCa1-x)(REEyCa1-y)F6Trig.
3.AB.35Polezhaevaite-(Ce)NaSrCeF6Hex. 6/m : P63/m

Related Minerals - Dana Grouping (8th Ed.)Hide

9.2.1.1FluoriteCaF2Iso. m3m (4/m 3 2/m) : Fm3m
9.2.1.3Tveitite-(Y)(Y, Na)6Ca6Ca6F42Trig. 3 : R3

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.

References for StrontiofluoriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Yakovenchuk, V.N., G.Y. Ivanyuk, Y.A.Pakhomovsky, E.A.Selivanova, J.A.Korchak, and A.P.Nikolaev (2010): Strontiofluorite, SrF2, a new mineral from the Khibiny Massif, Kola Peninsula, Russia. Canadian Mineralogist 48, 1487-1492.

Internet Links for StrontiofluoriteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
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, 1487-1492
          • Koashva Mt
Yakovenchuk, Y.A. et al.(2010): Strontiofluorite, a new mineral from the Khibiny Massif, Kola Peninsula, Russia, Canadian Mineralogist 48, 1487-1492
Mineral and/or Locality  
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