General Information:
Chemical Formula:
[ ]Mn2Fe++5Si8O22(OH)
Composition:
(Molecular Weight = 999.80 gm)
Manganese 10.99 % Mn
Iron 27.93 % Fe
Silicon 22.47 % Si
Hydrogen 0.20 % H
Oxygen 38.41 % O
Empirical Formula:
Mn2+2Fe2+5(Si8O22)(OH)2
IMA Status:
Approved IMA 1997
Physical Properties:
Hardness:
5-6 - Between Apatite and Orthoclase
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