Annite
Properties
| Formula | KFeII3(AlSi3O10)(OH)2 |
| Abbreviation | Ann |
| Classification | Biotite |
| IMA Status | Approved (IMA 1998 s.p.) |
| Search other databases | webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database |
| Crystal symmetry | Monoclinic, Point group 2/m, Space group C2/m (#12) |
| Tags | Hydroxide , Mineral, Aluminosilicate |
Composition
| Element | Atoms |
|---|---|
| K | 1 |
| Fe | 3 |
| Al | 1 |
| Si | 3 |
| O | 12 |
| H | 2 |
| Total: | 22 |