|See also mica a pale brown, or green, or colourless mineral of the mica group, found in plutonic rocks such as granite and in sedimentary rocks. It is used in the manufacture of lubricants, insulators, paints, and Christmas "snow". Composition: potassium aluminium silicate. Formula: KAl2(AlSi3)O10(OH)2. Crystal structure: monoclinic|
|[C19: from the phrase Muscovy glass, an early name for mica]|
|muscovite (mŭs'kə-vīt') Pronunciation Key
A usually colorless to yellow or pale-gray mica. Muscovite is a monoclinic mineral and is found in igneous rocks, such as granites and pegmatites, metamorphic rocks, such as schists and gneisses, and in many sedimentary rocks. Chemical formula: KAl2(AlSi3)O10(OH)2.