Chamosite is a mineral of the chlorite group. It occurs in the form of thin-scaly aggregates, shell-like oolites, and solid masses. Widespread in sedimentary iron ore deposits and veined hydrothermal deposits. When oxidized, it turns into brown iron ore.
You can see chamosite stone for sale and buy it in the Minerals of Russia online store.
General | |
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Category | Phyllosilicate |
Formula (repeating unit) |
(Fe2+,Mg)5Al(AlSi3O10)(OH)8 |
IMA symbol | Chm |
Strunz classification | 9.EC.55 |
Crystal system | Monoclinic |
Crystal class | Prismatic (2/m) (same H-M symbol) |
Space group | C2/m |
Unit cell | a = 5.37 Å, b = 9.3 Å, c = 14.22 Å; β = 97.88°; Z = 2 |
Identification | |
Color | Green, grey-green, black |
Mohs scale hardness | 3 |