Mineralogy Database

Calcioandyrobertsite-1M Mineral Data

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General Calcioandyrobertsite-1M Information

Help on Chemical  Formula: Chemical Formula: KCaCu5(AsO4)4[As(OH)2O2]•2(H2O)
Help on Composition: Composition: Molecular Weight = 1,129.55 gm
   Potassium   3.46 %  K     4.17 % K2O
   Calcium     3.55 %  Ca    4.96 % CaO
   Copper     28.13 %  Cu   35.21 % CuO
   Arsenic    33.16 %  As   50.87 % As2O5
   Hydrogen    0.54 %  H     4.78 % H2O
   Oxygen     31.16 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KCaCu5(AsO4)4(As(OH)2O2)•2(H2O)
Help on Environment: Environment: Single specimen found at the mine. Forms a series with andyrobertsite.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Tsumeb Mine, Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Andrew C. Roberts (1950-), mineralogist with the Geological Survey of Canada.
Help on Name Pronunciation: Name Pronunciation: Calcioandyrobertsite-1M + Pronunciation Say CALCIOANDYROBERTSITE-1M
Help on Synonym: Synonym: Calcio-andyrobertsite-1M - Renamed Calcioandyrobertsite-1M by Mineralogical Record, v39 (2008), p131
  IMA1997-022