General Information:
Chemical Formula:
(H3O,Ca)Al3(AsO4,SO4)2(OH)6
IMA Status:
Approved IMA 1979
Physical Properties:
Color:
gray green or light green.
Density:
3
Diaphaniety:
Transparent to Translucent
Hardness:
3-4 - Calcite-Fluorite
Luster:
Vitreous (Glassy)
Streak:
white
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