Mineralogy Database

Starkeyite Mineral Data

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General Starkeyite Information

Help on Chemical  Formula: Chemical Formula: MgSO4•4(H2O)
Help on Composition: Composition: Molecular Weight = 192.43 gm
   Magnesium  12.63 %  Mg   20.94 % MgO
   Hydrogen    4.19 %  H    37.45 % H2O
   Sulfur     16.66 %  S    41.61 % SO3
   Oxygen     66.52 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg(SO4)•4(H2O)
Help on Environment: Environment: Secondary mineral formed in the presence of iron sulfides; as efflorescences from evaporation of surface and ground waters.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1956
Help on Locality: Locality: Starkey mine, Madison Co., Missouri, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the localtiy.
Help on Name Pronunciation: Name Pronunciation: Starkeyite + Pronunciation Say STARKEYITE
Help on Synonym: Synonym: ICSD 23911
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