Phlogopite

KMg3(Si3Al)O10(F,OH)2

This sample of phlogopite is displayed in the Smithsonian Museum of Natural History. Phlogopite is a silicate mineral with fluorine with the composition KMg3(Si3Al)O10(F,OH)2. The sample at left is about 12 cm across and is from Franklin, New Jersey. It is described as phlogopite with calcite.

Mindat: Phlogopite

Minerals
Index
 
HyperPhysics*****GeophysicsR Nave
Go Back