Oligoclase

Image

Photograph of Oligoclase (var. sunstone, NMNH G3273) from the National Gem Collection, showing golden sheen. Specimen from Tvedestrand, Aust-Agder, Norway

© Photo by Chip Clark, via Smithsonian National Museum of Natural History

Properties

Formula (Na,Ca)(Si,Al)4O8
Classification Plagioclase
Luminescence emitters Eu, Fe, Mn, Triplet-singlet
Search other databases webmineral.com, mindat.org, rruf.info, fluomin.org, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Variety, Aluminosilicate

Composition

Element Atoms
O 8
Ca 0.2
Al 1.2
Si 2.8
Na 0.8
Total: 13

References

Reference
Lines Spectra Images
Tarashchan 1978 4 0 0
Telfer & Walker 1978, luminescence 2 0 0
Telfer & Walker 1978, luminescence, other 8 0 0
Torpy et al. 2020 0 1 0