General Information:
Chemical Formula:
Al6(Al,Ta)(Si,Sb)3BO15(O,OH)2
IMA Status:
Approved IMA 1969
Physical Properties:
Cleavage:
[010] Distinct
Color:
beige white, brown, greenish, greenish brown, or light brown white.
Density:
3.9
Hardness:
8.5 - Chrysoberyl
Luminescence:
Fluorescent.
Luster:
Vitreous - Resinous
Streak:
white
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