Mullite

Image

Mullite specimen from Emmelberg Mt., Üdersdorf, Daun, Eifel Mts, Rhineland-Palatinate, Germany

© Photo by Leon Hupperichs (on wikimedia.org), CC-BY-SA 3.0

Properties

Formula Al4+2xSi2-2xO10-x (x ≈ 0.4)
Abbreviation Mul
Classification Sillimanite (subgroup)
Luminescence emitters Eu, Sm
IMA Status Grandfathered (pre-IMA), 1924
Search other databases webmineral.com, mindat.org, rruf.info, fluomin.org, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Mineral, Aluminosilicate

Composition

Element Atoms
Al 38
Si 13.18
O 48.82
Total: 100

Reference

Reference Lines Spectra Images
Moore & Karakus 1994 2 0 0