Fluorannite

Properties

Formula KFeII3(Si3Al)O10F2
Abbreviation Fann
Classification Biotite
IMA Status Approved (IMA 1999-048)
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Halide , Mineral, Aluminosilicate

Composition

Element Atoms
K 1
Fe 3
Al 1
Si 3
O 10
F 2
Total: 20