A Geoscience Digital Image Library

DescriptionPhlogopite, KMg3(Si3Al)O10(F,OH)2 (potassium magnesium aluminum silicate hydroxide) is a rarer member of the mica group and is not well known even by mineral collectors. It is mined mainly for its uses as a heat and electrical insulator. Phlogopite is iron poor and biotite rich. Its name comes from the Greek flogopos, meaning “resembling fire”.
LocationUSA ▹ Maine. Near Auburn.
PhotographerShannon Heinle. 2002-02-10.
CollectionUniversity of North Dakota Mineralogy Collection #1463.
Key wordsphlogopite, mica, silicate, insulator
Tech details453 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number2338