mineral

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

AI-generated identification · may be incorrect

Hardness: 2-3 on Mohs scale; Color: Emerald green to light green; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect basal; Specific gravity: 2.8-3.0

Hardness: 2-3 on Mohs scale
Color: Emerald green to light green
Luster: Vitreous to pearly

Identified June 28, 2026More mineral →

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Physical properties

Hardness: 2-3 on Mohs scale; Color: Emerald green to light green; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect basal; Specific gravity: 2.8-3.0

Formation & geological history

Formed primarily in metamorphic rocks like schists and gneisses, specifically through the hydrothermal alteration of chromium-bearing minerals in regional metamorphism.

Uses & applications

Used as a pigment in paints, as a decorative stone in carvings, and highly valued by mineral collectors for its vibrant color. In the metaphysical community, it is used as a healing stone.

Geological facts

The green color is caused by small amounts of trivalent chromium replacing aluminum in the crystal structure. It is named after the German chemist and mineralogist Johann Nepomuk von Fuchs.

Field identification & locations

Identify in the field by its distinct bright green micaceous (flaky) appearance and low hardness. Commonly found in Brazil, India, Russia, and Zimbabwe. Look for it occurring in schistose rocks alongside quartz.