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Thorbastnäsite

Type Locality
Pichikhol' alkaline Massif, Balygtyg-Khem River, Sangilen Upland, Tuva Republic, Eastern-Siberian Region, Russia
Mineral Data
Th(Ca,Ce)(CO3)2F2·3H2O
Strunz: 
5.BD.20a
Physical Properties
Colour: 
Brown
Hardness: 
4.0 - 4.5
Synonyms
Synonyms: 
Thorbastnaesite and Thorbastnasite