General Information:
Chemical Formula:
Ca(Y,Th)Al5(SiO4)2(PO4,SO4)2(OH)7·6(H2O)
IMA Status:
Approved IMA 1987
Physical Properties:
Cleavage:
None
Color:
white.
Density:
3.07 - 3.15, Average = 3.11
Hardness:
3.5-4 - Copper Penny-Flourite
Luster:
Greasy (Oily)
Streak:
white
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