Mineralogy Database

Meridianiite Mineral Data

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General Meridianiite Information

Help on Chemical  Formula: Chemical Formula: MgSO4•11H2O
Help on Composition: Composition: Molecular Weight = 318.54 gm
   Magnesium   7.63 %  Mg   12.65 % MgO
   Hydrogen    6.96 %  H    62.21 % H2O
   Sulfur     10.07 %  S    25.14 % SO3
   Oxygen     75.34 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg(SO4)•11(H2O)
Help on Environment: Environment: Frozen pond on waters high in MgSO4 below 2 Deg C. Dehydrates to amorphous sodium sulfate or kieserite. Decomposes above 2 Deg C to epsomite and water.
Help on IMA Status: IMA Status: Approved IMA 2007 (Dana # Added)
Help on Locality: Locality: Venables Valley, 20 km SSW of Ashcroft, British Columbia, Canada Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name, meridianiite, was chosen to reflect the locality on Mars where the MER rover Opportunity observed crystal molds in sedimentary rock that are thought to be caused by minera ls that have since dehydrated or disso
Help on Synonym: Synonym: Fritzsche's salt