Ferro-ferri-hornblende [ ☐Ca2(FeII4FeIII)(Si7Al)O22(OH)2 ]
Material properties
| Formula | ☐Ca2(FeII4FeIII)(Si7Al)O22(OH)2 |
| Abbreviation | Ffhbl |
| IMA Status | Approved (IMA 2015-054) |
| Classifications | Minerals containing OH, Hornblende root name group |
| Search other databases | webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database |
| Tags | Hydroxide, Mineral, Silicate |
Composition
| Element | Atoms |
|---|---|
| Al | 1 |
| H | 2 |
| Ca | 2 |
| ☐ | 1 |
| Si | 7 |
| O | 24 |
| Fe | 5 |
| Total: | 42 |
Specimens of Ferro-ferri-hornblende
| Name | Owner | Materials | Phase purity | Image |
|---|---|---|---|---|
| M2362 Sanidine | CSIRO | Albite (var. Ca), Albite, Ferro-ferri-hornblende (4.3%), Microcline, Muscovite-1M (var. Mg), Sanidine (var. high) | 4.3 |
