Sepiolite


Composition:

Mg4Si6O15(OH)2.6H2O

Crystal System : Orthorhombic
Colours: White, pale-grey, pale-yellow
Lustre : Earthy
Hardness (H) : 2.0-2.5
Specific Gravity (S.G) : 2.0
References: Belendorff (2006)

 

Distribution

Extremely rare

Occurrence

  • Supergene

Paragenetic and General Notes

Sepiolite from Tsumeb is reported by Belendorff (2006) as an accessory mineral accompanying brucite in earthy crusts in a rare paragenesis with calcite, cerussite, dolomite, parkinsonite and wulfenite.