Skip to content
Mineralati

Minerals

Phlogopite

phlogopite

KMg3(Si3Al)O10(OH)2

Phlogopite mineral information and data

Phlogopite mineral information and data — via www.dakotamatrix.com · Source

Overview

Phlogopite is a yellow, greenish, or reddish-brown member of the mica family of phyllosilicates. It is also known as magnesium mica. Phlogopite is the magnesium endmember of the biotite solid solution series, with the chemical formula KMg3AlSi3O10(F,OH)2. Iron substitutes for magnesium in variable amounts leading to the more common biotite with higher iron content. For physical and optical identification, it has most of the characteristic properties of biotite.

Identification characteristics

  • Mohs hardness 2.5

Scientific references

  1. Phlogopite — Wikidata. https://www.wikidata.org/wiki/Q422977 Link
  2. Phlogopite — Wikipedia. https://en.wikipedia.org/wiki/Phlogopite Link