Mineralogy Database

Johannsenite Mineral Data

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General Johannsenite Information

Help on Chemical  Formula: Chemical Formula: CaMnSi2O6
Help on Composition: Composition: Molecular Weight = 247.18 gm
   Calcium    16.21 %  Ca   22.69 % CaO
   Manganese  22.23 %  Mn   28.70 % MnO
   Silicon    22.72 %  Si   48.62 % SiO2
   Oxygen     38.84 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMn2+(Si2O6)
Help on Environment: Environment: Contact metasomatic rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1932
Help on Locality: Locality: Empire Zinc Company mine near Hanover, Grant County, New Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Prof. Albert Johannsen of the University of Chicago.
Help on Name Pronunciation: Name Pronunciation: Johannsenite + Pronunciation Say JOHANNSENITE
Help on Synonym: Synonym: ICSD 16906
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