Mineralogy Database

Mandarinoite Mineral Data

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General Mandarinoite Information

Help on Chemical  Formula: Chemical Formula: Fe+++2Se3O9•6(H2O)
Help on Composition: Composition: Molecular Weight = 600.66 gm
   Iron      18.60 %  Fe   26.59 % Fe2O3
   Hydrogen   2.01 %  H    18.00 % H2O
   Selenium  39.44 %  Se   51.42 % Se2O3
   Oxygen    39.95 %  O
            ______        ______ 
            100.00 %       96.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+2Se3O9•6(H2O)
Help on Environment: Environment: Found on a penroseite museum specimen. Probable oxidation product of penroseite and siderite or pyrite.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Pacajake mine, Potosi, Bolivia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Joseph A. Mandarino of the Royal Ontario Museum in recognition of his work on selenites.
Help on Name Pronunciation: Name Pronunciation: Mandarinoite + Pronunciation Say MANDARINOITE
Help on Synonym: Synonym: ICSD 201805
  IMA1977-049
  PDF 29-719