General Information:
Chemical Formula:
K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8·8(H2O)
IMA Status:
Approved IMA 1987
Physical Properties:
Cleavage:
[100] Perfect, [001] Distinct
Color:
light violet or pink.
Density:
2.61
Diaphaniety:
Transparent to Translucent
Luster:
Vitreous - Silky
Streak:
white
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