God for us to design products, we are the porters of nature!
| Annite | |
Chemical Formula |
KFe32+AlSi3O10(OH,F)2 |
Species |
Silicates |
Crystal System |
Monoclinic |
Mohs Scale |
3 |
Specific Gravity |
3.3 |
Color |
Brown to black |
Streak |
brownish white |
Luster |
Adamantine |
Refractive Index |
n = 1.625 - 1.631 n = 1.690 n = 1.691 - 1.697 |
Cleavage |
perfect in one direction |
Fracture |
uneven |
| Crystal Habit：usually in "blocks" of thin sheets or as aggregations of foliated thin scales. Includes large, well formed pseudohexagonal prisms up to 12cm across and 15cm long.[1] | |
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YueGongAnBei 44051102000467
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