Mineralogy Database

Strontiomelane Mineral Data

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General Strontiomelane Information

Help on Chemical  Formula: Chemical Formula: SrMn++++6Mn+++2O16
Help on Composition: Composition: Molecular Weight = 783.11 gm
   Strontium  11.19 %  Sr   13.23 % SrO
   Manganese  56.12 %  Mn   20.16 % Mn2O3 / 66.61 % MnO2
   Oxygen     32.69 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: SrMn4+6Mn3+2O16
Help on Environment: Environment: Post-Alpine stage of veining. Sr end-member of the cryptomelane group.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Found at the Praborna manganese mine, near Saint-Marcel, Aosta Valley, Italian Alps. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name reflects the presence of strontium and the black color, melanos in Greek.
Help on Synonym: Synonym: IMA1995-005