| General Information |
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| Varieties/Types: | |
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| Chemical Formula | Anthony et al, Handbook of Mineralogy (2001) |
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| Physical Properties of Muscovite |
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| Mohs Hardness | 2.5Anthony et al, Handbook of Mineralogy (2001) |
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| Specific Gravity | 2.77 to 2.88Anthony et al, Handbook of Mineralogy (2001) |
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| Tenacity | Flexible,ElasticAnthony et al, Handbook of Mineralogy (2001) |
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| Cleavage Quality | PerfectAnthony et al, Handbook of Mineralogy (2001) |
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| Optical Properties of Muscovite |
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| Refractive Index | 1.552 to 1.618Anthony et al, Handbook of Mineralogy (2001) |
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| Optical Character | Biaxial/-Anthony et al, Handbook of Mineralogy (2001) |
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| Pleochroism | Weak when colored.Anthony et al, Handbook of Mineralogy (2001) |
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| Dispersion | WeakAnthony et al, Handbook of Mineralogy (2001) |
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| Colour |
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| Colour (General) | Colorless, gray, brown, green, yellow, rose-red; commonly colorless in thin section, but may be pale yellow, green, red-brown.Anthony et al, Handbook of Mineralogy (2001) |
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| Transparency | Transparent,TranslucentAnthony et al, Handbook of Mineralogy (2001) |
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| Lustre | Vitreous,Silky,PearlyAnthony et al, Handbook of Mineralogy (2001) |
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| Crystallography of Muscovite |
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| Crystal System | MonoclinicAnthony et al, Handbook of Mineralogy (2001) |
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| Habit | Crystals tabular to columnar, striated, pseudohexagonal or diamond-shaped. As stellate aggregates, plumose, globular; scaly, granular, compact massive.Anthony et al, Handbook of Mineralogy (2001) |
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| Geological Environment |
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| Where found: | A common rock-forming mineral, in phyllites, schists, and gneisses; in granites, granite pegmatites, and aplites. Formed from other minerals under hydrothermal conditions; may be detrital or authigenic.Anthony et al, Handbook of Mineralogy (2001) |
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| Further Information |
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| Mineral information: | Muscovite information at mindat.org |
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