General Information:
Chemical Formula:
Na17Ca3Mg(Ti,Mn)4[Si2O7]2(PO4)6O2F6
IMA Status:
Approved IMA
Physical Properties:
Color:
brown.
Density:
3.07
Diaphaniety:
Transparent to Translucent
Hardness:
5 - Apatite
Luster:
Vitreous - Resinous
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