Phlogopite
WordNet

noun


(1)   A brown form of mica consisting of hydrous silicate of potassium and magnesium and aluminum
WiktionaryText

Noun


  1. A mica mineral with the chemical formula KMg3AlSi3O10(F,OH)2, a basic potassium magnesium aluminosilicate, used as an insulator.
 
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