Mineralogy Database

Sepiolite Mineral Data

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General Sepiolite Information

Help on Chemical  Formula: Chemical Formula: Mg4Si6O15(OH)2•6(H2O)
Help on Composition: Composition: Molecular Weight = 613.82 gm
   Magnesium  15.84 %  Mg   26.26 % MgO
   Silicon    27.45 %  Si   58.73 % SiO2
   Hydrogen    1.97 %  H    17.61 % H2O
   Oxygen     54.74 %  O
             ______        ______ 
             100.00 %      102.61 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg4Si6O15•6(H2O)
Help on Environment: Environment: Secondary mineral associated with serpentine. Can precipitate from alkali saline waters in arid environments.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1847
Help on Locality: Locality: Eski Shehr, Asia Minor. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek, sepia - "cuttlefish" and lithos - "stone." From the German, meerschaum meaning "sea froth."
Help on Name Pronunciation: Name Pronunciation: Sepiolite + Pronunciation Say SEPIOLITE
Help on Synonym: Synonym: ICSD 31142
  PDF 26-1226
  Sea Foam