Fluorstrophite
A valid IMA mineral species
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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.
Unique Identifiers
Mindat ID:
3757
Long-form identifier:
mindat:1:1:3757:6
GUID
(UUID V4):
(UUID V4):
abf61fae-9eb0-4334-9480-99e653fc50b3
IMA Classification of Fluorstrophite
Approved
Approval year:
1962
First published:
1962
Classification of Fluorstrophite
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
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Fstr | 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 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
Chemistry of Fluorstrophite
Mindat Formula:
SrCaSr3(PO4)3F
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
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.89 Å | (100) |
| 3.167 Å | (70) |
| 2.78 Å | (70) |
| 1.909 Å | (70) |
| 1.467 Å | (60) |
| 2.32 Å | (50) |
| 2.147 Å | (50) |
| 1.953 Å | (40) |
| 1.849 Å | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 36 : Carbonatites, kimberlites, and related igneous rocks |
Type Occurrence of Fluorstrophite
General Appearance of Type Material:
Poorly formed oval crystals 0.2x1 cm in longitudinal section and as small crystals with corroded faces.
Geological Setting of Type Material:
Alkalic pegmatites
Associated Minerals at Type Locality:
Reference:
Efimov, A.F., Kravchenko, S.M., Vasil’eva, Z.V. (1962) Strontium-apatite — a new mineral. Doklady Akademii Nauk SSSR: 142: 439-442.
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 |
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Fluorstrophite associated with Magnesio-arfvedsonite | {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2 |
| 2 photos of Fluorstrophite associated with Orthoclase | K(AlSi3O8) |
| 1 photo of Fluorstrophite associated with Titanite | CaTi(SiO4)O |
| 1 photo of Fluorstrophite associated with Strontium-bearing Thomsonite | Na(Ca,Sr)2[Al5Si5O20] · 6H2O |
Related Minerals - Strunz-mindat Grouping
| 8.BN. | Aradite | BaCa6[(SiO4)(VO4)](VO4)2F |
| 8.BN. | Magganasite | CuFe3+3O(AsO4)3 |
| 8.BN. | Fluorpyromorphite | Pb5(PO4)3F |
| 8.BN. | Fluorsigaiite | Ca2Sr3(PO4)3F |
| 8.BN. | Fluoralforsite | Ba5(PO4)3F |
| 8.BN.05 | Alforsite | Ba5(PO4)3Cl |
| 8.BN.05 | Belovite-(Ce) | NaCeSr3(PO4)3F |
| 8.BN.05 | Chlorapatite | Ca5(PO4)3Cl |
| 8.BN.05 | Mimetite-M | Pb5(AsO4)3Cl |
| 8.BN.05 | Johnbaumite-M | Ca5(AsO4)3OH |
| 8.BN.05 | Fluorapatite | Ca5(PO4)3F |
| 8.BN.05 | Hedyphane | Ca2Pb3(AsO4)3Cl |
| 8.BN.05 | Hydroxylapatite | Ca5(PO4)3(OH) |
| 8.BN.05 | Johnbaumite | Ca5(AsO4)3(OH) |
| 8.BN.05 | Mimetite | Pb5(AsO4)3Cl |
| 8.BN.05 | Morelandite | Ca2Ba3(AsO4)3Cl |
| 8.BN.05 | Oxypyromorphite | Pb10(PO4)6O |
| 8.BN.05 | Pyromorphite | Pb5(PO4)3Cl |
| 8.BN.05 | Svabite | Ca5(AsO4)3F |
| 8.BN.05 | Turneaureite | Ca5(AsO4)3Cl |
| 8.BN.05 | Vanadinite | Pb5(VO4)3Cl |
| 8.BN.05 | Belovite-(La) | NaLaSr3(PO4)3F |
| 8.BN.05 | Deloneite | (Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5 |
| 8.BN.05 | Fluorcaphite | SrCaCa3(PO4)3F |
| 8.BN.05 va | Germanate-pyromorphite | Pb5(PO4)2GeO4 |
| 8.BN.05 | Kuannersuite-(Ce) | NaCeBa3(PO4)3F0.5Cl0.5 |
| 8.BN.05 | Hydroxylapatite-M | Ca5(PO4)3OH |
| 8.BN.05 | Phosphohedyphane | Ca2Pb3(PO4)3Cl |
| 8.BN.05 | Hydroxylpyromorphite | Pb5(PO4)3(OH) |
| 8.BN.05 | Stronadelphite | Sr5(PO4)3F |
| 8.BN.05 | Fluorphosphohedyphane | Ca2Pb3(PO4)3F |
| 8.BN.05 | Carlgieseckeite-(Nd) | NaNdCa3(PO4)3F |
| 8.BN.05 | Vanackerite | Pb4Cd(AsO4)3Cl |
| 8.BN.05 | Miyahisaite | (Sr,Ca)2Ba3(PO4)3F |
| 8.BN.05 | Unnamed (OH-analogue of Mimetite) | Pb5(AsO4)3(OH) |
| 8.BN.05 | Pieczkaite | Mn5(PO4)3Cl |
| 8.BN.05 | Hydroxylhedyphane | Ca2Pb3(AsO4)3(OH) |
| 8.BN.05 | Pliniusite | Ca5(VO4)3F |
| 8.BN.05 | Parafiniukite | Ca2Mn3(PO4)3Cl |
| 8.BN.10 | Arctite | Na2Ca4(PO4)3F |
| 8.BN.15 | Goryainovite | Ca2(PO4)Cl |
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.
Internet Links for Fluorstrophite
mindat.org URL:
https://www.mindat.org/min-3757.html
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References for Fluorstrophite
Localities for Fluorstrophite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Bottrill (2021) |
Canada | |
| Anton R. Chakhmouradian and Roger H. Mitchell (2001) |
| Platt & Wooley (1990) |
Japan | |
| Mandarino (2002) |
| Sakai & Akai (1988) | |
Russia | |
| Canadian Mineralogist 40:121-136 |
| Osipov et al. (2021) |
| ... |
| Pekov (1998) |
South Africa | |
| Mitchell et al. (2004) |
USA | |
| Joseph F. Cooper Jr. et al. (2003) |
Zambia | |
|
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Inagli chrome diopside deposit, Inagli Massif, Aldan, Sakha, Russia