Apatite, phosphate mineral
(repeating unit)SrCaCa3(PO4)3F | | Strunz classification | 7/B.39-95 |
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| Crystal system | Hexagonal |
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| Crystal class | Dipyrimidal |
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| Space group | P63 (No. 173) |
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| Unit cell | 545.39 Å3 (calculated from unit cell) |
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| Identification |
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| Formula mass | 671.38 |
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| Colour | Light to bright yellow |
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| Crystal habit | Prismatic, subhedral crystals |
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| Fracture | Sub-conchoidal |
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| Tenacity | Brittle |
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| Mohs scale hardness | 5 |
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| Luster | Vitreous |
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| Streak | White |
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| Diaphaneity | Transparent |
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| Density | 3.60 |
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| Birefringence | 0.012 |
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Fluorcaphite is a mineral with the chemical formula (Ca,Sr,Ce,Na)5(PO4)3F.[1] It is found in the Kola Peninsula in Russia.[2] Its crystals are hexagonal (dipyramidal class) and are transparent with a vitreous luster. It is light to bright yellow, leaves a white streak and is rated five on the Mohs Scale.[3] Fluorcaphite is radioactive.[1]
References
- ^ a b Fluorcaphite on webmineral.com
- ^ Fluorcaphite on Handbook of Mineralogy
- ^ Fluorcaphite on Mindat.org
Wikimedia Commons has media related to Fluorcaphite.
