Rock Identifier
Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2) — mineral
mineral

Fuchsite

K(Al,Cr)2(AlSi3O10)(OH)2

AI-generated identification · may be incorrect

Hardness of 2 to 2.5 on the Mohs scale, bright emerald to light green color with a pearly luster, monoclinic crystal system, and perfect basal cleavage.

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Physical properties

Hardness of 2 to 2.5 on the Mohs scale, bright emerald to light green color with a pearly luster, monoclinic crystal system, and perfect basal cleavage.

Formation & geological history

Formed through the hydrothermal alteration of chromium-rich ultramafic rocks in metamorphic environments.

Uses & applications

Used primarily as a decorative mineral specimen, in lapidary arts, and as an ore mineral for chromium extraction.

Geological facts

The green color is attributed to chromium substitution for aluminum within the mica structure. It is often found associated with quartz veins and ruby-in-fuchsite specimens.

Field identification & locations

Identified easily by its distinctive sparkling green mica flakes and soft texture. Common localities include Russia, Brazil, India, and Zimbabwe.