General Information:
Chemical Formula:
(Na,Ca,K)(Nb,Ti)Si2O6(O,OH)·2(H2O)
Physical Properties:
Cleavage:
[001] Indistinct
Color:
brown, brown, rose, yellow, or tan.
Density:
2.838 - 2.885, Average = 2.86
Diaphaniety:
Opaque
Hardness:
5 - Apatite
Luster:
Earthy (Dull)
Streak:
light pink
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