Almandine

Properties

Formula FeII3Al2(SiO4)3
Abbreviation Alm
Classification Garnet
Spectra Reflectance (1)
IMA Status Grandfathered (pre-IMA), 1546 (?)
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry Cubic, Point group m3m, Space group Ia3d (#230)
Tags Mineral, Aluminosilicate

Composition

Element Atoms
Fe 3
Si 3
O 12
Al 2
Total: 20