General Information:
Chemical Formula:
(K,Sr)2-xNb2O6(O,OH)·n(H2O)
IMA Status:
Approved IMA 1978
Physical Properties:
Color:
green.
Density:
3.4 - 3.48, Average = 3.44
Diaphaniety:
Translucent to Opaque
Hardness:
4-4.5 - Between Fluorite and Apatite
Luster:
Vitreous - Resinous
Streak:
gray white
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