Mineralogy Database

Colemanite Mineral Data

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General Colemanite Information

Help on Chemical  Formula: Chemical Formula: Ca2B6O11•5(H2O)
Help on Composition: Composition: Molecular Weight = 411.09 gm
   Calcium   19.50 %  Ca   27.28 % CaO
   Boron     15.78 %  B    50.81 % B2O3
   Hydrogen   2.45 %  H    21.91 % H2O
   Oxygen    62.27 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2B6O11•5(H2O)
Help on Environment: Environment: Lacusterine limestone hosted borate deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1884
Help on Locality: Locality: Furnace Creek district, Death Valley, Inyo Co. California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: After William T. Coleman, owner of the Death Valley, California mine where this species was first found.
Help on Name Pronunciation: Name Pronunciation: Colemanite + Pronunciation Say COLEMANITE
Help on Synonym: Synonym: ICSD 75921
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