RRUFF #4972

Bannisterite

Элементы:Ca K Na Mn Fe Si Al O H

Valence:Ca K NaMn^2+Fe^2+Si Al O H

Химия

IMA chemistry:: (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8·nH2O
Valence chemistry:: (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8·nH2O

Классификация

Crystal systems:: monoclinic
Space groups:: A2, a
Structural group:: Stilpnomelane, Clay
IMA status:: Approved

Происхождение

Country:: United Kingdom
Published:: 1967
Oldest age Ma:: 1861
Paragenetic modes:: Abiotic, Stage 4a: Earth's earliest continental crust, PM32 - Ba-Mn-Pb-Zn metamorphics

Примечания

Smith M L, Frondel C (1968) The related layered minerals ganophyllite, bannisterite, and stilpnomelane. Mineralogical Magazine 36, 893-913 Chemical formula revised: Dunn P J, Leavens P B, Norberg J A, Ramik R A (1981) Bannisterite: new chemical data and empirical formulae. American Mineralogist 66, 1063-1067