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3.15" Lustrous Muscovite Crystal Cluster - Minas Gerais, Brazil
Here is a beautiful cluster of muscovite crystals that was collected from Minas Gerais, Brazil. The specimen measures 3.15" wide and exhibits an eye-catching, pearly luster and pale yellow-green coloration.
Muscovite is a phyllosilicate mineral of aluminium and potassium. It has a highly perfect basal cleavage, yielding remarkably thin laminæ that are often highly elastic. It can be colorless or tinted through grays, violet, or red, and can be transparent or translucent. Fuchsite and mariposite are green varieties of muscovite, owing their green color to chromium impurities. Alurgite is a manganese-bearing, purple to reddish variety of muscovite.
