General Information:
Chemical Formula:
(Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3·18(H2O)
IMA Status:
Approved IMA 1959
Physical Properties:
Cleavage:
[010] Distinct
Color:
colorless, greenish gray, or light gray green.
Density:
2.6
Diaphaniety:
Transparent
Hardness:
4-5 - Fluorite-Apatite
Streak:
white
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