Bariomicrolite
General Information: Chemical Formula:Ba2(Ta,Nb)2(O,OH)7 IMA Status:Approved IMA 1977 Physical Properties: Color:brown, colorless, yellow, white, or pink brown. Density:5.68 Diaphaniety:Translucent to Opaque Hardness:4.5-5 Luster:Adamantine - Resinous Streak:white More details...
Ba(Ta,Nb)2(O,OH)7
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