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phlogopite

DEFINITIONS OF: phlogopite

1

n a brown form of mica consisting of hydrous silicate of potassium and magnesium and aluminum

Type of:
isinglass, mica
any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
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