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.
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
Mica
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Micas are a group of silicate minerals whose outstanding physical characteristic is that individual mica crystals can easily be split into fragile elastic plates. This characteristic is described as p
Fuchsite
…Fuchsite, also known as chrome mica, is a chromium (Cr)-rich variety of the mineral muscovite, belonging to the mica group of phyllosilicate minerals, with the chemical formula K(Al,Cr)3Si3O10(OH)2. Trivalent chromium replaces one of the aluminium (Al) atoms in the…
Mica
Sheets of mica
Photomicrographs of a thin section containing phlogopite. In cross-polarized light on the left, plane-polarized light on the right.
Dark mica from eastern Ontario