Grunerite

Properties

Formula ☐FeII2FeII5Si8O22(OH)2
Abbreviation Gru
Classifications Cummingtonite-Grunerite (series), Mg-Fe-Mn amphibole
Luminescence emitter OH
IMA Status Approved/redefined (IMA 2012 s.p.)
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Related materials Ferro-anthophyllite, Proto-ferro-anthophyllite
Tags Hydroxide , Mineral, Silicate

Composition

Element Atoms
H 2
1
Si 8
O 24
Fe 7
Total: 42