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Muscovite
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Muscovite is a hydrated phyllosilicate mineral of aluminium and potassium with formula KAl22. It has a highly perfect basal cleavage yielding remarkably thin laminae which are often highly elastic. Sh
Muscovite with albite from Doce valley, Minas Gerais, Brazil (dimensions: 6 × 5.3 × 3.9 cm)
Muscovite with albite from Doce valley, Minas Gerais, Brazil (dimensions: 6 × 5.3 × 3.9 cm)
Muscovite window
Muscovite window
Structure of muscovite, viewed in the [100] direction (along the layers of the crystal)
Structure of muscovite, viewed in the [100] direction (along the layers of the crystal)
Muscovite with beryl, from Afghanistan
Muscovite with beryl, from Afghanistan
Fuchsite
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Fuchsite, also known as chrome mica, is a chromium -rich variety of the mineral muscovite, belonging to the mica group of phyllosilicate minerals, with the chemical formula K3Si3O102.
Muscovite
…transparent or translucent. It is anisotropic and has high birefringence. Its crystal system is monoclinic. The green, chromium-rich variety is called fuchsite; mariposite is also a chromium-rich type of muscovite. Muscovite is the most common mica, found in granites, pegmatites, gneisses, and schists, and as…
Verdite, a microcrystalline metamorphic rock, is composed mostly of green fuchsite. This specimen (6.5 cm across at its base), of Archean age, is from
Verdite, a microcrystalline metamorphic rock, is composed mostly of green fuchsite. This specimen (6.5 cm across at its base), of Archean age, is from Barberton, Mpumalanga, South Africa