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Any of a group of chemically and physically related aluminum silicate minerals, common in igneous and metamorphic rocks, characteristically splitting into flexible sheets used in insulation and electrical equipment.
[Latin mīca, grain (perhaps influenced by micāre, to flash).]
mi·ca′ceous (-kā′shəs) adj.
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|Adj.||1.||micaceous - hydrous silicates of or relating to or resembling mica|