Mineralogy Database

Clarkeite Mineral Data

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General Clarkeite Information

Help on Chemical  Formula: Chemical Formula: (Na,Ca,Pb)(UO2)O(OH)•0-1(H2O)
Help on Composition: Composition: Molecular Weight = 318.75 gm
   Sodium     5.05 %  Na    6.81 % Na2O
   Calcium    1.26 %  Ca    1.76 % CaO
   Uranium   67.21 %  U    76.24 % UO2
   Hydrogen   0.41 %  H     3.67 % H2O
   Lead       6.50 %  Pb    7.00 % PbO
   Oxygen    19.58 %  O
            ______        ______ 
            100.00 %       95.48 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.7Pb0.1Ca0.1(UO2)0.9O0.9(OH)1.1•0.1(H2O)
Help on Environment: Environment: Replacing uraninite, as a late-stage hydrothermal alteration product.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1931
Help on Locality: Locality: Spruce Pine district, from the Deer Park and other mines, Mitchell County, North Carolina, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Frank Wigglesworth Clarke (1847-1931), prominent American geochemist of the US Geological Survey.
Help on Synonym: Synonym: ICSD 83456
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