Sanidine

Properties

Formula (K,Na)(Si,Al)4O8
Abbreviation Sa
Variant high
Classification Alkali feldspar
Luminescence emitters Fe, Mn, Pb, Unspecified
IMA Status Grandfathered (pre-IMA), 1808
Search other databases webmineral.com, mindat.org, rruf.info, fluomin.org, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry Monoclinic
Tags Mineral, Aluminosilicate, Aluminosilicate

Composition

Element Atoms
O 8
Al 1
Si 3
K 0.75
Na 0.25
Total: 13

Reference