General Information:
Chemical Formula:
[ ]Mn4(Fe++)3(Si8O22)(OH)2
Composition:
(Molecular Weight = 997.98 gm)
Manganese 22.02 % Mn
Iron 16.79 % Fe
Silicon 22.51 % Si
Hydrogen 0.20 % H
Oxygen 38.48 % O
Empirical Formula:
Mn2+4Fe2+3Si8O22(OH)2
IMA Status:
Approved IMA 1997
Physical Properties:
Hardness:
5-6 - Between Apatite and Orthoclase
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