Vermiculite
Properties
| Formula | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4ยท8H2O |
| Abbreviation | Vrm |
| Classification | Smectite (group) |
| IMA Status | Grandfathered (pre-IMA), 1824 |
| 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 | Hydrated , Hydroxide , Mineral, Aluminosilicate |
Composition
| Element | Wt% |
|---|---|
| H | 2 |
| Mg | 8.68 |
| Fe | 9.97 |
| Al | 23.01 |
| Si | 5.57 |
| O | 50.77 |
| Total: | 100 |