a brownish mica consisting of a hydrous silicate of potassium, magnesium, and aluminium, occurring principally in metamorphic limestones and ultrabasic rocks. Formula: KMg3AlSi3O10(OH)2
See also mica
Word origin
C19: from Greek phlogōpos of fiery appearance, from phlox flame +ōps eye
phlogopite in American English
(ˈflɑgoʊˌpaɪt)
noun
a brown, monoclinic mica, K(Mg,Fe)3AlSiO10(OH,F)2, used mainly as an electrical insulator
Word origin
Ger phlogopit < Gr phlogōpos, fiery (< phlox, flame: see phlox + ōps, face, eye) + Ger -it, -ite1