Staurolite

Properties

Formula FeII2Al9Si4O23(OH)
Abbreviation St
IMA Status Grandfathered (pre-IMA), 1792
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry Monoclinic, Point group 2/m, Space group C2/m (#12)
Tags Hydroxide , Mineral, Silicate , Aluminosilicate

Composition

Element Atoms
H 1
Si 4
Fe 2
O 24
Al 9
Total: 40