mineral
Muscovite Mica
KAl2(AlSi3O10)(OH)2
AI-generated identification · may be incorrectHardness of 2 to 2.5 on the Mohs scale, silver to greenish color, pearly to vitreous luster, and monoclinic crystal system with perfect basal cleavage.
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Physical properties
Hardness of 2 to 2.5 on the Mohs scale, silver to greenish color, pearly to vitreous luster, and monoclinic crystal system with perfect basal cleavage.
Formation & geological history
Forms in igneous rocks like granites and pegmatites, as well as metamorphic rocks like schists and gneisses through regional metamorphism.
Uses & applications
Used in electrical insulators, paints, plastics, cosmetics for pearlescence, and as a raw mineral specimen for collectors.
Geological facts
Muscovite is the most common mineral of the mica family, historically known as 'muscovy glass' due to its use as a glass substitute in medieval Russia.
Field identification & locations
Easily identified in the field by its distinct sheet-like cleavage, elastic flexibility in thin flakes, and silvery or pearly sheen.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous