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Mineralpedia Details for Betafite

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Betafite

Betafite

Formula
(Ca,U)2(Ti,Nb,Ta)2O6(OH) 
Crystal System
Isometric 
Crystal Habit
Encrustations, Massive - Granular 
Cleavage
None, None, None 
Luster
Vitreous - Greasy 
Color
brown, black, brownish green, yellow, greenish black 
Streak
yellowish white 
Class
Isometric - Hexoctahedral 
Fracture
Conchoidal 
Hardness
5-5.5 
WebMineral
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Mindat
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Betafite from Silver Crater mine, Bancroft, Ontario, Canada

Betafite
            from Silver Crater mine, Bancroft, Ontario, Canada

Several sharp, dull, brown, very good Betafite crystals to 4mm. 

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