Mineralogy Database

Guanacoite Mineral Data

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General Guanacoite Information

Help on Chemical  Formula: Chemical Formula: (Cu,Mg)2Mg2(Mg,Cu)(OH)4(H2O)4(AsO4)2
Help on Composition: Composition: Molecular Weight = 612.83 gm
   Magnesium  12.41 %  Mg   20.59 % MgO
   Copper     19.39 %  Cu   24.27 % CuO
   Arsenic    24.45 %  As   37.50 % As2O5
   Hydrogen    1.97 %  H    17.64 % H2O
   Oxygen     41.77 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: 2(Cu0.85)2(Mg0.15)Mg2Mg0.83Cu0.17(OH)4(AsO4)2(H2O)4
Help on Environment: Environment: Isotypic with akrochordite
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Mine dump at the El Guanaco Mine, East Catalina, Chile, South America Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: IMA2003-021