Mineralogy Database

Symesite Mineral Data

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General Symesite Information

Help on Chemical Formula: Chemical Formula: Pb10(SO4)O7Cl4•(H2O)
Help on Composition: Composition: Molecular Weight = 2,439.89 gm
   Hydrogen   0.08 %  H     0.74 % H2O
   Lead      84.92 %  Pb   91.48 % PbO
   Sulfur     1.31 %  S     3.28 % SO3
   Chlorine   5.81 %  Cl    5.81 % Cl
               -   %   Cl   -1.31 % -O=Cl2   
   Oxygen     7.87 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb10(SO4)O7Cl4•(H2O)
Help on Environment: Environment: Oxidized zone of a Carboniferous Mn-Pb-Cu deposit. Related to the nadorite and kombatite groups
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Merehead Quarry, Somerset, England. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Robert Symes (1937-) of the Department of Mineralogy, the Natural History Museum (London) in recognition of his studies of the ore deposits of South-West England.
Help on Synonym: Synonym: ICSD 98741
  IMA1998-035