Stilpnomelane [ (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36·nH2O ]
Material properties
| Formula | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36·nH2O |
| Abbreviation | Stp |
| IMA Status | Approved (IMA 1971 s.p.) |
| Classifications | Minerals containing H2O, Minerals containing OH |
| Search other databases | webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database |
| Tags | Hydrated, Hydroxide, Mineral |
Composition
| Element | Atoms |
|---|---|
| K | 1 |
| Al | 2 |
| H | 7 |
| O | 29 |
| Si | 10 |
| Mg | 1.4 |
| Fe | 6.6 |
| Total: | 57 |
Specimens of Stilpnomelane
| Name | Owner | Materials | Phase purity | Image |
|---|---|---|---|---|
| M0319 Chalcopyrite | CSIRO | Chalcopyrite, Jarosite, Pyrite, Stilpnomelane (2.5%) | 2.5 |
