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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