General Information:
Chemical Formula:
(Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2
Physical Properties:
Cleavage:
[001] Perfect
Color:
brownish red or reddish yellow.
Density:
3.472
Diaphaniety:
Translucent
Hardness:
4-5 - Fluorite-Apatite
Luster:
Vitreous (Glassy)
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