Fluorstrophite
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About Fluorstrophite
Formula:
SrCaSr3(PO4)3F
Colour:
Green to yellow-green, colourless
Lustre:
Vitreous, Greasy
Hardness:
5
Crystal System:
Hexagonal
Member of:
Name:
First named strontium-apatite by Efimov et al. in 1962. It was later changed to apatite-(SrOH) (Burke 2008) despite fluorine being dominant over hydroxyl. It was renamed to fluorstrophite by Pasero et al. (2010). The current name reflects the composition, including dominant fluorine, strontium, and phosphate.
This page provides mineralogical data about Fluorstrophite.
Classification of Fluorstrophite
Approved
Approval year:
1962
7/B.39-100
8.BN.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1
41.8.1.7
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : A5(XO4)3Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : A5(XO4)3Zq
22.1.18
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride
Physical Properties of Fluorstrophite
Vitreous, Greasy
Transparency:
Transparent, Translucent
Colour:
Green to yellow-green, colourless
Hardness:
5 on Mohs scale
Optical Data of Fluorstrophite
Type:
Uniaxial (-)
RI values:
nω = 1.651 nε = 1.637
Max Birefringence:
δ = 0.014

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
Chemical Properties of Fluorstrophite
Crystallography of Fluorstrophite
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 9.565(8) Å, c = 7.115(3) Å
Ratio:
a:c = 1 : 0.744
Unit Cell V:
563.74 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals short to long hexagonal prisms [0001], with {1010} and {1011} dominant; also thick tabular {0001}, frequently in the crystals of hydrothermal origin in pegmatites and veins, with {1010}, relatively large {0001}, and often also {1011} or low pyramids. Massive, coarse granular to compact.
Comment:
Space group P63/m or P63.
Crystal Structure
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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) |
---|---|---|---|---|---|---|---|
0014055 | Fluorstrophite | Klevtsova R F (1964) The crystal structure of strontium-apatite Journal of Structural Chemistry 5 318-320 | 1964 | 0 | 293 |
CIF Raw Data - click here to close
Type Occurrence of Fluorstrophite
Synonyms of Fluorstrophite
Other Language Names for Fluorstrophite
Relationship of Fluorstrophite to other Species
Member of:
Other Members of this group:
Belovite-(Ce) | NaCeSr3(PO4)3F | Trig. 3 : P3 |
Belovite-(La) | NaLaSr3(PO4)3F | Trig. 3 : P3 |
Carlgieseckeite-(Nd) | NaNdCa3(PO4)3F | Trig. 3 : P3 |
Deloneite | (Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5 | Trig. 3 : P3 |
Fluorcaphite | SrCaCa3(PO4)3F | Hex. 6/m : P63/m |
Kuannersuite-(Ce) | NaCeBa3(PO4)3F0.5Cl0.5 | Trig. 3 : P3 |
Related Minerals - Nickel-Strunz Grouping
8.BN. | Aradite | BaCa6[(SiO4)(VO4)](VO4)2F | Trig. 3m : R3m |
8.BN.05 | Alforsite | Ba5(PO4)3Cl | Hex. 6/m : P63/m |
8.BN.05 | Belovite-(Ce) | NaCeSr3(PO4)3F | Trig. 3 : P3 |
8.BN.05 | Carbonate-rich Fluorapatite | Ca5(PO4,CO3)3(F,O) | Hex. |
8.BN.05 | Carbonate-rich Hydroxylapatite | Ca5(PO4,CO3)3(OH,O) | Hex. |
8.BN.05 | Chlorapatite | Ca5(PO4)3Cl | Hex. 6/m : P63/m |
8.BN.05 | Mimetite-M | Pb5(AsO4)3Cl | Mon. 2/m : P21/b |
8.BN.05 | Johnbaumite-M | Ca5(AsO4)3OH | Mon. 2/m : P21/m |
8.BN.05 | Fluorapatite | Ca5(PO4)3F | Hex. 6/m : P63/m |
8.BN.05 | Hedyphane | Ca2Pb3(AsO4)3Cl | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
8.BN.05 | Hydroxylapatite | Ca5(PO4)3(OH) | Hex. 6/m : P63/m |
8.BN.05 | Johnbaumite | Ca5(AsO4)3OH | Hex. 6/m : P63/m |
8.BN.05 | Mimetite | Pb5(AsO4)3Cl | Hex. 6/m : P63/m |
8.BN.05 | Morelandite | Ca2Ba3(AsO4)3Cl | Hex. |
8.BN.05 | Pyromorphite | Pb5(PO4)3Cl | Hex. 6/m : P63/m |
8.BN.05 | Svabite | Ca5(AsO4)3F | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
8.BN.05 | Turneaureite | Ca5(AsO4)3Cl | Hex. |
8.BN.05 | Vanadinite | Pb5(VO4)3Cl | Hex. 6/m : P63/m |
8.BN.05 | Belovite-(La) | NaLaSr3(PO4)3F | Trig. 3 : P3 |
8.BN.05 | Deloneite | (Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5 | Trig. 3 : P3 |
8.BN.05 | Fluorcaphite | SrCaCa3(PO4)3F | Hex. 6/m : P63/m |
8.BN.05 | Kuannersuite-(Ce) | NaCeBa3(PO4)3F0.5Cl0.5 | Trig. 3 : P3 |
8.BN.05 | Hydroxylapatite-M | Ca5(PO4)3OH | Mon. 2/m : P21/b |
8.BN.05 | Phosphohedyphane | Ca2Pb3(PO4)3Cl | Hex. 6/m : P63/m |
8.BN.05 | Stronadelphite | Sr5(PO4)3F | Hex. 6/m : P63/m |
8.BN.05 | Fluorphosphohedyphane | Ca2Pb3(PO4)3F | Hex. 6/m : P63/m |
8.BN.05 | Carlgieseckeite-(Nd) | NaNdCa3(PO4)3F | Trig. 3 : P3 |
8.BN.05 | Miyahisaite | (Sr,Ca)2Ba3(PO4)3F | Hex. 6/m : P63/m |
8.BN.10 | Arctite | Na2Ca4(PO4)3F | Trig. 3m (3 2/m) : R3m |
Related Minerals - Dana Grouping (8th Ed.)
41.8.1.1 | Fluorapatite | Ca5(PO4)3F | Hex. 6/m : P63/m |
41.8.1.2 | Chlorapatite | Ca5(PO4)3Cl | Hex. 6/m : P63/m |
41.8.1.3 | Hydroxylapatite | Ca5(PO4)3(OH) | Hex. 6/m : P63/m |
41.8.1.4 | Carbonate-rich Fluorapatite | Ca5(PO4,CO3)3(F,O) | Hex. |
41.8.1.4 | Stronadelphite | Sr5(PO4)3F | Hex. 6/m : P63/m |
41.8.1.6 | Belovite-(Ce) | NaCeSr3(PO4)3F | Trig. 3 : P3 |
Related Minerals - Hey's Chemical Index of Minerals Grouping
22.1.1 | Amblygonite | LiAl(PO4)F | Tric. 1 : P1 |
22.1.2 | Lacroixite | NaAl(PO4)F | Mon. 2/m : B2/b |
22.1.3 | Natrophosphate | Na7(PO4)2F · 19H2O | Iso. m3m (4/m 3 2/m) : Fd3c |
22.1.5 | Nacaphite | Na2Ca(PO4)F | Mon. 2/m : P21/b |
22.1.6 | Arctite | Na2Ca4(PO4)3F | Trig. 3m (3 2/m) : R3m |
22.1.7 | Nefedovite | Na5Ca4(PO4)4F | Tric. |
22.1.9 | Fluorapatite | Ca5(PO4)3F | Hex. 6/m : P63/m |
22.1.10 | Herderite | CaBe(PO4)F | Mon. 2/m |
22.1.11 | Isokite | CaMg(PO4)F | Mon. 2/m : B2/b |
22.1.12 | Panasqueiraite | CaMg(PO4)(OH,F) | Mon. |
22.1.13 | Babefphite | BaBePO4(F,OH) | Tet. |
22.1.14 | Fluellite | Al2(PO4)F2(OH) · 7H2O | Orth. mmm (2/m 2/m 2/m) : Fddd |
22.1.15 | Minyulite | KAl2(PO4)2(OH,F) · 4H2O | Orth. mm2 : Pba2 |
22.1.16 | Morinite | NaCa2Al2(PO4)2(OH)F4 · 2H2O | Mon. 2/m |
22.1.17 | Bøggildite | Na2Sr2Al2PO4F9 | Mon. |
22.1.19 | Viitaniemiite | Na(Ca,Mn2+)Al(PO4)(F,OH)3 | Mon. |
22.1.20 | Väyrynenite | Mn2+Be(PO4)(OH,F) | Mon. 2/m : P21/b |
22.1.21 | Maxwellite | NaFe3+(AsO4)F | Mon. 2/m : P2/m |
22.1.22 | Wagnerite | (Mg,Fe2+)2(PO4)F | Mon. 2/m : P21/b |
22.1.23 | Triplite | Mn2+2(PO4)F | Mon. 2/m |
22.1.24 | Magniotriplite | (Mg,Fe2+,Mn2+)2PO4F | Mon. |
22.1.25 | Zwieselite | Fe2+2(PO4)F | Mon. 2/m : P21/b |
22.1.26 | Mcauslanite | Fe3Al2(PO4)3(PO3OH)F · 18H2O | Tric. |
22.1.27 | Richellite | CaFe3+2(PO4)2(OH,F)2 | Amor. |
22.1.28 | Svabite | Ca5(AsO4)3F | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
22.1.29 | Tilasite | CaMg(AsO4)F | Mon. m : Bb |
22.1.30 | Johnbaumite-M | Ca5(AsO4)3OH | Mon. 2/m : P21/m |
22.1.31 | Durangite | NaAl(AsO4)F | Mon. 2/m : B2/b |
Other Information
Notes:
Soluble in HCl or in HNO3. Varieties containing CO3 may dissolve with slight effervescence.
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 Fluorstrophite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Volkova and Melentiev (1939) Comptes rendus de l’académie des sciences de l’U.R.S.S., n.s.: 25: 120.
Kristallografiya: 32: 891-895.
Efimov, A.F., Kravchenko, S.M., Vasil’eva, Z.V. (1962) Strontium-apatite — a new mineral. Doklady Akademii Nauk SSSR: 142: 439-442.
Fleischer, M. (1962) New mineral names. American Mineralogist: 47: 805-812.
Klevtsova, R.F. (1964) The crystal structure of strontium-apatite. Journal of Structural Chemistry: 5: 318-320.
Sudarsanan, K., Young, R.A. (1972) Structure of strontium hydroxide phosphate, Sr5(PO4)3OH. Acta Crystallographica: B28: 3668-3670.
Pushcharovskii, D.Y., Nadezhina, T.N., Khomyakov, A.P. (1987) Crystal structure of strontium apatite from Khibiny. Soviet Physics - Crystallography: 32: 524-525.
Burke, E.A.J. (2008) Tidying up mineral names: an IMA-CNMNC scheme for suffixes, hyphens and diacritical marks. The Mineralogical Record: 39: 131-135.
Chakhmouradian, A.R., Reguir, E.P., Mitchell, R.H. (2002) Strontium-apatite: new occurrences, and the extent of Sr-for-Ca substitution in apatite-group minerals. The Canadian Mineralogist: 40: 121-136.
Pasero, M., Kampf, A.R., Ferraris, C., Pekov, I.V., Rakovan, J.R., White, T.J. (2010) Nomenclature of the apatite supergroup minerals. European Journal of Mineralogy: 22: 163-179.
Internet Links for Fluorstrophite
mindat.org URL:
https://www.mindat.org/min-3757.html
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External Links:
Mineral Dealers:
Localities for Fluorstrophite
Locality List




All localities listed without proper references should be considered as questionable.
Canada | |
| Anton R. Chakhmouradian and Roger H. Mitchell (2001) Three compositional varieties of perovskite from kimberlites of the Lac de Gras Field (Northwest Territories, Canada). Mineralogical Magazine 65:133-148 |
| Platt & Wooley (1990) |
Japan | |
| [MinRec 33:168] |
Sakai & Akai (1988) Sanko-Gakkai Kou'en-Youshi, 16. | |
Russia | |
| Canadian Mineralogist 40:121-136 |
| www.koeln.netsurf.de/~w.steffens/khib.htm |
| Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow |
South Africa | |
| Mitchell, R.H., Liferovich, R.P. (2004) Ecandrewsite - zincian pyrophanite from lujavrite, Pilansberg alkaline complex, South Africa. The Canadian Mineralogist: 42: 1169-1178. |
USA | |
| Joseph F. Cooper Jr., Gail E. Dunning, Ted A.Hadley (2003) Minerology of the Victor Claim, Clear Creek Area, New Idria District, San Benito County, California. |
Zambia | |
|
Ōmi, Itoigawa City, Niigata Prefecture, Japan