Mineralogy Database

Groutite Mineral Data

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General Groutite Information

Help on Chemical  Formula: Chemical Formula: Mn+++O(OH)
Help on Composition: Composition: Molecular Weight = 87.94 gm
   Manganese  62.47 %  Mn   89.76 % Mn2O3
   Hydrogen    1.15 %  H    10.24 % H2O
   Oxygen     36.39 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn3+O(OH)
Help on Environment: Environment: A secondary mineral lining vugs in weathered banded iron formations. Trimorphous with manganite and feitknechtite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1945
Help on Locality: Locality: Mahnomen mine, Cuyuna Range, Crow Wing Co., Minnesota, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Frank Fitch Grout (1880-1958), petrologist, of the University of Minnesota, Minneapolis, Minnesota, USA.
Help on Name Pronunciation: Name Pronunciation: Groutite Say GROUTITE
Help on Synonym: Synonym: ICSD 30659
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