General Information:
Chemical Formula:
Ca6Mn+++9(PO4)9O6(H2O)6·3(H2O)
Composition:
(Molecular Weight = 1,739.69 gm)
Calcium 13.82 % Ca
Manganese 28.42 % Mn
Phosphorus 16.02 % P
Hydrogen 0.35 % H
Oxygen 41.39 % O
Empirical Formula:
Ca6Mn2+9(PO4)9O6·3(H2O)
IMA Status:
Approved IMA 1974
Physical Properties:
Cleavage:
[100] Good
Color:
blood red, brownish black, dark red, reddish brown, or black.
Density:
3.17
Diaphaniety:
Translucent to Opaque
Hardness:
3.5 - Copper Penny
Luster:
Adamantine
Streak:
brown
More details...