Mineralogy Database

Mackinawite Mineral Data

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General Mackinawite Information

Help on Chemical  Formula: Chemical Formula: (Fe,Ni)S0.9
Help on Composition: Composition: Molecular Weight = 85.42 gm
   Iron    49.04 %  Fe
   Nickel  17.18 %  Ni
   Sulfur  33.79 %  S
          100.00 % 
Help on Empirical Formula: Empirical Formula: Fe2+0.75Ni0.25S0.9
Help on Environment: Environment: Serpentinization of ultrabasic rocks.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Mackinaw mine, Snohomish County, Washington, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Mackinawite + Pronunciation Say MACKINAWITE
Help on Synonym: Synonym: ICSD 81087
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