mineral
Muscovite
KAl2(AlSi3O10)(OH)2
AI-generated identification · may be incorrectHardness of 2-2.5 on Mohs scale. Colors range from colorless, yellow, brown, green to violet. Vitreous to pearly luster with perfect basal cleavage forming thin, elastic sheets.
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Physical properties
Hardness of 2-2.5 on Mohs scale. Colors range from colorless, yellow, brown, green to violet. Vitreous to pearly luster with perfect basal cleavage forming thin, elastic sheets.
Formation & geological history
Forms in igneous rocks like granitic pegmatites, as well as in metamorphic and sedimentary environments through regional metamorphism.
Uses & applications
Used in electrical insulation, paints, lubricants, and cosmetics for its pearly sheen.
Geological facts
Also known as common mica, it was historically used as a glass substitute in windows due to its heat resistance and clear cleavage sheets.
Field identification & locations
Easily identified by its distinctive sheet-like cleavage and flexible, elastic flakes. Found globally in pegmatites and schistose rocks.
