Alkali feldspar [ (Na,K)AlSi3O8 ]
Material properties
| Formula | (Na,K)AlSi3O8 |
| Abbreviation | Afs |
| Variants | lunar, Microcline perthite |
| Classification | Feldspar (group) |
| Members | Sanidine, high, Kokchetavite, Anorthoclase, Sanidine, K feldspar, Rubicline, Albite, Ferrisanidine |
| Luminescence emitters | Al-O- -Al, Eu, Fe, Si-O, Trapped hole, Unspecified |
| Spectra | Luminescence (1) |
| IMA Status | Approved group |
| Search other databases | webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database |
| Tags | Silicate, Subgroup, Variety, Aluminosilicate |
Composition
| Element | Atoms |
|---|---|
| O | 8 |
| Al | 1 |
| Si | 3 |
| Na | ~0.5 |
| K | ~0.5 |
References for Alkali feldspar
|
Lines | Spectra | Images | ||
|---|---|---|---|---|---|
| Kirsh & Townsend 1988 | 9 | 0 | 0 | ||
| Kuznetsov and Tarashchan 1988 | 1 | 0 | 0 | ||
| CSIRO/WUStL Apollo 12 (2019) | 1 | 1 | 0 | ||
| White 1974, reflectance | 1 | 0 | 0 | ||
| White 1974, reflectance, other | 2 | 0 | 0 |
