Sepiolite [ Mg4Si6O15(OH)2·6H2O ]

Material properties

Formula Mg4Si6O15(OH)2·6H2O
Abbreviation Sep
Classifications Sepiolite (group), Minerals containing OH, Minerals containing H2O
IMA Status Grandfathered (pre-IMA), 1847
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry Orthorhombic, Point group mmm, Space group Pnna (#52)
Tags Hydrated , Hydroxide , Mineral, Silicate

Composition

Element Atoms
Si 6
H 14
O 23
Mg 4
Total: 47

Specimens of Sepiolite

Name Owner Materials Phase purity Image
SepSp-1 Sepiolite CSIRO Powellite, Quartz, Sepiolite (96.8%) 96.8
API-H46-1 Palygorskite / Montmorillonite / Sepiolite CSIRO Montmorillonite, Palygorskite, Quartz, Sepiolite (10.1%) 10.1