
1) Monoclinic mineral 2) Potassium mineral
Found on
https://www.crosswordclues.com/clue/annite

Annite is a phyllosilicate mineral in the mica family. It has a chemical formula of KFe32+AlSi3O10(OH,F)2. Annite is the iron end member of the biotite mica group, the iron rich analogue of magnesium rich phlogopite. Annite is monoclinic and contains tabular crystals and cleavage fragments with pseudohexagonal outlines. There are contact twins wit...
Found on
http://en.wikipedia.org/wiki/Annite
No exact match found.