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Montebrasite
- Translations : Montebrasit, Montebrasita, Монтебразит, 羟磷锂铝石
- Etymology : Montebras Mine, Montebras-en-Soumans, Boussac, Creuse, Limousin, France.
- Discovery: 1870 by Alfred Des Cloizeaux
- Type localityMontebras Mines, Montebras, Soumans, Creuse, Limousin, France
Gemological data
- Chemical formula : LiAl(PO4)(OH,F
- Hardness (Mohs) : 5.5 - 6
- Refractive index : nα = 1.594 - 1.615 nβ = 1.608 - 1.624 nγ = 1.616 - 1.645
- Crystal system : Triclinique
- Group : Amblygonites
- Mineralogical Class : Phosphates
