Mineralogy Database

Hilgardite Mineral Data

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General Hilgardite Information

Help on Chemical  Formula: Chemical Formula: Ca2B5O9Cl•(H2O)
Help on Composition: Composition: Molecular Weight = 331.67 gm
   Calcium   24.17 %  Ca   33.82 % CaO
   Boron     16.30 %  B    52.48 % B2O3
   Hydrogen   0.61 %  H     5.43 % H2O
   Chlorine  10.69 %  Cl   10.69 % Cl
               -   %   Cl   -2.41 % -O=Cl2   
   Oxygen    48.24 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2B5O9Cl•(H2O)
Help on Environment: Environment: Minor borate mineral in salt deposits.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Choctaw Salt Dome, Iberville Parish, Louisiana, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Eugene W. Hilgard (1833-1916), German-American geologist, one of the first to describe the Loiuisiana salt dome deposits.
Help on Name Pronunciation: Name Pronunciation: Hilgardite + Pronunciation Say HILGARDITE