Mineralogy Database

Mountkeithite Mineral Data

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General Mountkeithite Information

Help on Chemical  Formula: Chemical Formula: (Mg,Ni)11(Fe+++,Cr)3(SO4,CO3)3.5(OH)24•11(H2O)
Help on Composition: Composition: Molecular Weight = 1,426.01 gm
   Magnesium  18.34 %  Mg   30.41 % MgO
   Aluminum    1.34 %  Al    2.54 % Al2O3
   Chromium    4.01 %  Cr    5.86 % Cr2O3
   Iron        5.56 %  Fe    7.95 % Fe2O3
   Copper      0.09 %  Cu    0.11 % CuO
   Nickel      4.61 %  Ni    5.87 % NiO
   Hydrogen    3.28 %  H    29.35 % H2O
   Carbon      1.02 %  C     3.73 % CO2
   Sulfur      5.67 %  S    14.15 % SO3
   Oxygen     56.08 %  O
             ______        ______ 
             100.00 %       99.98 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg10.76(OH)26.07•10.2(H2O)Ni1.12Cu0.02Fe3+1.42Cr1.1Al0.71(SO4)2.52(CO3)1.21
Help on Environment: Environment: Bleached serpentinite matrix.
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Mount Keith nickel deposit, 400 km nnw of Kalgooolie, WA, Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Mountkeithite + Pronunciation Say MOUNTKEITHITE