[2] Trivalent chromium replaces one of the aluminium (Al) atoms in the general muscovite formula producing the apple green hue distinctive of fuchsite.

It is often found in minute micaceous aggregates (with individual plates barely visible), as a major component of chromium rich phyllitic or schistose metamorphic rocks of the greenschist facies.

Verdite is a type of metamorphic rock made mostly of an impure, often multicolored, variety of fuchsite.

Fuchsite is named after the German chemist and mineralogist Johann Nepomuk von Fuchs.

Fuchsite fluoresces lime green under long wave UV light.