Mineralogy Database

Bentorite Mineral Data

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General Bentorite Information

Help on Chemical  Formula: Chemical Formula: Ca6(Cr,Al)2(SO4)3(OH)12•26(H2O)
Help on Composition: Composition: Molecular Weight = 1,292.63 gm
   Calcium   18.60 %  Ca   26.03 % CaO
   Aluminum   1.04 %  Al    1.97 % Al2O3
   Chromium   6.03 %  Cr    8.82 % Cr2O3
   Hydrogen   4.99 %  H    44.60 % H2O
   Sulfur     7.44 %  S    18.58 % SO3
   Oxygen    61.89 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca6Cr1.5Al0.5(SO4)3(OH)12•26(H2O)
Help on Environment: Environment: Low-temperature hydrothermal veins in black calciteļæ½spurrite marble.
Help on IMA Status: IMA Status: Approved IMA 1980
Help on Locality: Locality: Marble quarry in the Hatrurim Formation, near the Arad-Sodom road, Negev Desert, Israel. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Y.K. Bentor, Professor at the University of California, San Diego, California, USA, for his contributions to geology and mineralogy in Israel.
Help on Name Pronunciation: Name Pronunciation: Bentorite + Pronunciation Say BENTORITE