Rock Identifier
Fuchsite (Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral
mineral

Fuchsite

Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)

Hardness: 2-2.5 on the Mohs scale. Color: Bright green to emerald green. Luster: Pearly to vitreous. Crystal structure: Monoclinic, typically forming micaceous flakes or massive aggregates. Cleavage: Perfect basal cleavage.

Hardness
2-2
Color
Bright green to emerald green
Luster
Pearly to vitreous
Identified More mineral
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Physical properties

Hardness: 2-2.5 on the Mohs scale. Color: Bright green to emerald green. Luster: Pearly to vitreous. Crystal structure: Monoclinic, typically forming micaceous flakes or massive aggregates. Cleavage: Perfect basal cleavage.

Formation & geological history

Formed in low-grade metamorphic rocks, particularly mica schists and gneisses, as well as hydrothermal veins, through the alteration of chromium-bearing minerals.

Uses & applications

Used primarily as a mineral specimen for collectors, in lapidary arts for decorative items, and sometimes as an ore of chromium or in metaphysical practices.

Geological facts

Fuchsite gets its characteristic sparkling green color from the presence of chromium, which substitutes for aluminum in the crystal structure. It is often associated with rubies embedded in matrix (Ruby in Fuchsite).

Field identification & locations

Easily identifiable in the field by its distinctive sparkling green micaceous flakes and softness. Commonly found in countries like India, Brazil, Russia, and the USA.