Mineralogy Database

Gonyerite Mineral Data

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General Gonyerite Information

Help on Chemical Formula: Chemical Formula: Mn++3[Mn++3Fe+++][(Si,Fe+++)4O10](OH,O)8
Help on Composition: Composition: Molecular Weight = 703.49 gm
   Magnesium  10.36 %  Mg   17.19 % MgO
   Manganese  23.43 %  Mn   30.25 % MnO
   Iron        9.53 %  Fe   13.62 % Fe2O3
   Silicon    15.17 %  Si   32.46 % SiO2
   Hydrogen    0.57 %  H     5.12 % H2O
   Oxygen     40.94 %  O
             ______        ______ 
             100.00 %       98.64 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg3Mn2+3Fe3+Si3.8Fe3+0.2O14(OH)4
Help on Environment: Environment: Veinlets in Mn-rich skarns.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1955
Help on Locality: Locality: Langban, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Forest A. Gonyer (1899-1971), chemist-analyst and mineralogist, Harvard University.
Help on Name Pronunciation: Name Pronunciation: Gonyerite + Pronunciation Say GONYERITE