Mineralogy Database

Omongwaite Mineral Data

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General Omongwaite Information

Help on Chemical  Formula: Chemical Formula: Na2Ca5(SO4)6•3H2O
Help on Composition: Composition: Molecular Weight = 880.31 gm
   Potassium   2.62 %  K     3.16 % K2O
   Sodium      3.84 %  Na    5.17 % Na2O
   Calcium    21.67 %  Ca   30.32 % CaO
   Hydrogen    0.69 %  H     6.14 % H2O
   Sulfur     22.11 %  S    55.21 % SO3
   Oxygen     49.07 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na1.47K0.59Ca4.76S6.07O24•3(H2O)
Help on Environment: Environment: Found in inclusions in gypsum crystals in recent salt lake deposits. Related to bassanite.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Omongwa (salt) pan, near Aminuis, 140 km SSE of Gobabis, southwestern Kalahari, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality
Help on Synonym: Synonym: IMA2003-054b