Mineralogy Database

Johnbaumite Mineral Data

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General Johnbaumite Information

Help on Chemical  Formula: Chemical Formula: Ca5(AsO4)3(OH)
Help on Composition: Composition: Molecular Weight = 634.15 gm
   Calcium   31.60 %  Ca   44.21 % CaO
   Arsenic   35.44 %  As   54.37 % As2O5
   Hydrogen   0.16 %  H     1.42 % H2O
   Oxygen    32.80 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5(AsO4)3(OH)
Help on Environment: Environment: As analog of hydroxylapatite and (OH) analog of svabite.
Help on IMA Status: IMA Status: Approved IMA 1980
Help on Locality: Locality: Palmer Shaft, Franklin mine, Franklin, Sussex County, New Jersey, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for John L. Baum (1916-), resident geologist of the New Jersey Zinc Co. and curator of the Franklin Mineral Museum, Franklin, New Jersey, USA.
Help on Name Pronunciation: Name Pronunciation: Johnbaumite + Pronunciation Say JOHNBAUMITE