Chemistry:Cheralite
From HandWiki
Short description: Anhydrous phosphate mineral
Cheralite is an anhydrous phosphate mineral with the ideal chemical formula CaTh(PO4)2.[1][2] It is isomorphous with huttonite and monazite. It can be regarded as the product of the complete cationic substitution in the system:
2 LREE3+ ↔ Ca2+ + Th4+.
It was previously known under the name brabantite.
Physical properties:[2]
| Property | Value |
|---|---|
| Lustre | Vitreous |
| Description | Dull or greasy |
| Colour | Grayish brown to reddish brown (on rims), pale yellow, brownish green |
| Hardness | 5 on Mohs scale |
| Density | 4.72 - 5.02 g/cm3 |
References
- ↑ Kees Linthout. "Tripartite division of the system 2REEPO4-CaTh (PO4)2-2ThSiO4, discreditation of brabantite, and recognition of cheralite as the name for members dominated by CaTh(PO4)2, Canadian Mineralogist 45 (2007) 503-508". https://rruff.info/uploads/CM45_503.pdf. Retrieved May 11, 2018.
- ↑ 2.0 2.1 Cheralite on Mindat.org
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