Bannisterite

KCaMn21(Si,Al)32O76(OH)1612H2O

These samples of bannisterite are displayed in the Smithsonian Museum of Natural History. Bannisterite is a silicate which contains manganese and has the composition KCaMn21(Si,Al)32O76(OH)1612H2O. This sample is about 11 cm wide and is from Franklin, New Jersey.

This sample of bannisterite is about 5 cm long. It is from Broken Hill, New South Wales, Australia.

Mindat: Bannisterite

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