mineral

Fuchsite

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

Hardness: 2-2.5 on Mohs scale; Color: Emerald green to light green; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal; Specific Gravity: 2.8 - 2.9

Hardness: 2-2
Color: Emerald green to light green
Luster: Pearly to vitreous

Identified April 2, 2026More mineral →

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Physical properties

Hardness: 2-2.5 on Mohs scale; Color: Emerald green to light green; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal; Specific Gravity: 2.8 - 2.9

Formation & geological history

Formed through regional metamorphism. It is a chromium-rich variety of muscovite mica found in phyllites and schists, often where hydrothermal fluids have interacted with chromium-rich rocks.

Uses & applications

Used primarily as an ornamental stone, in lapidary work for cabochons, and as a source of chromium. It is also a popular specimen for mineral collectors and used in metaphysical practices.

Geological facts

The green color is derived from small amounts of trivalent chromium replacing aluminum in the mineral structure. When it contains inclusions of ruby, it is known as Ruby in Fuchsite.

Field identification & locations

Identify in the field by its distinct green color and micaceous habit (it flakes off in thin, flexible sheets). Common in Brazil, India, and Zimbabwe. Look for its characteristic 'glittery' appearance under light.

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