General Information:
Chemical Formula:(Na,K)6(Mn++,Fe++)3Si9O24·6(H2O)
Composition:(Molecular Weight = 1,080.50 gm)Potassium 7.24 %
K Sodium 8.51 %
NaManganese 11.44 %
MnIron 3.88 %
FeSilicon 23.39 %
SiHydrogen 1.12 %
H Oxygen 44.42 %
O Empirical Formula: Na4K2Mn2+2.25Fe2+0.75Si9O24·6(H2O)
IMA Status:Approved IMA 1982
Physical Properties: Color:yellow green, yellow orange, or olive green.
Density:2.78
Hardness:2-3 - Gypsum-Calcite
Streak:greenish white
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