Muscovite variety of Mica Hydrous potassium aluminum silicate KAl2(AlSi3)O10(OH)2

Muscovite in the East Region No notable occurrences in database yet. Muscovite in the Front Range Region Boulder County - Oregon Mine - Pennsylvania Mine Jefferson County - Wigwam Creek area Larimer County - Crystal Mountain Muscovite in the Northwest Region Mesa County - Nancy Hanks Mine Muscovite in the South Central Region Chaffee County - Browns Canyon - California Mine - Calumet Mine - Clara May Mine - Homestake Mine - Mt. Antero - Mt. White - Rock King Mine - Sedalia Mine El Paso County - Deadmans Canyon pegmatite - Johnny Feldspar Mine - St. Peters Dome Fremont County - Border Feldspar Mine - Royal Gorge area Lake County - Hagerman Pass Park County - Black Prince Mine - Boomer Mine - Meyers Ranch - Redskin Gulch - Round Mountain area - Spruce Grove area - Wilkerson Pass East area - Wilkerson Pass West area Teller County - Crystal Peak - Four Mile Creek area - Lake George area - RAMS Claim Muscovite in the Southwest Region San Juan County - Brooklyn Mine - Silverton area

A sheet of muscovite mica from the Four Mile Creek area. It is approximately 2 inches in diameter. Muscovite crystal and Smoky Quartz from Mt. Antero. Measures 7 cm by 11 cm in size. Photo courtesy of The Mineral Gallery.

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