Mineralogy Database

Hallimondite Mineral Data

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General Hallimondite Information

Help on Chemical  Formula: Chemical Formula: Pb2(UO2)(AsO4)2
Help on Composition: Composition: Molecular Weight = 962.27 gm
   Uranium  24.74 %  U    28.06 % UO2
   Arsenic  15.57 %  As   23.89 % As2O5
   Lead     43.07 %  Pb   46.39 % PbO
   Oxygen   16.63 %  O
           ______        ______ 
           100.00 %       98.34 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb2(UO2)(AsO4)2
Help on Environment: Environment: Secondary mineral found on a museum specimen from an oxidizing As-Pb-bearing deposit, formed by alteration of galena.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Michael mine, Weiler, near Lahr, Black Forest, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Arthur Francis Hallimond (1890-1968), British mineralogist, London, England, for his work with secondary uranium minerals.
Help on Name Pronunciation: Name Pronunciation: Hallimondite + Pronunciation Say HALLIMONDITE