phlogopite

 
Pronunciation: /ˈflɒgəpʌɪt/

noun

[mass noun]
  • a brown micaceous mineral which occurs chiefly in metamorphosed limestone and magnesium-rich igneous rocks.

Origin:

mid 19th century: from Greek phlogōpos 'fiery' (from the base of phlegein 'to burn') + ōps, ōp- 'face' + -ite1