ˈflägəˌpīt noun
( -s )
Etymology: German phlogopit, from Greek phlogōpos fiery-looking, flaming red (from phlog-, phlox flame + ōps eye) + German -it -ite — more at eye
: a usually yellowish brown to brownish red or copper form of mica that is typically a silicate of potassium, magnesium, and aluminum with some fluorine or hydroxyl and that is grouped with biotite