General Information:
Chemical Formula:
KNa4Ca4Si8O18(CO3)4(OH,F)·(H2O)
IMA Status:
Approved IMA 1969
Physical Properties:
Cleavage:
[001] Perfect, [110] Distinct
Color:
colorless, light blue, dark blue, or pink.
Density:
2.45
Diaphaniety:
Transparent to Translucent
Hardness:
4-4.5 - Between Fluorite and Apatite
Luster:
Vitreous - Pearly
Streak:
white
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