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Oxybismutomicrolite

Type Locality
Solnechnaya pegmatite, Malkhan pegmatite field, Krasnyi Chikoy, Krasnochikoysky District, Zabaykalsky Krai, Russia
Mineral Data
(Bi1.330.67)Σ2Ta2O6O
Strunz: 
4.DH.15
Physical Properties
Colour: 
Black
Crystal System: 
Isometric
Streak: 
greyish white
Hardness: 
5
Tenacity: 
Brittle
Synonyms
Synonyms: 
IMA2019-047