Mineralogy Database

Langbanite Mineral Data

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General Langbanite Information

Help on Chemical Formula: Chemical Formula: (Mn,Ca,Fe)++4(Mn+++,Fe+++)9Sb+++++Si2O24
Help on Composition: Composition: Molecular Weight = 1,291.77 gm
   Calcium     0.93 %  Ca    1.30 % CaO
   Manganese  47.63 %  Mn   21.97 % MnO / 44.00 % Mn2O3
   Iron        6.05 %  Fe    8.65 % Fe2O3
   Silicon     4.35 %  Si    9.30 % SiO2
   Antimony   11.31 %  Sb   13.54 % Sb2O3
   Oxygen     29.73 %  O
             ______        ______ 
             100.00 %       98.76 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+3.7Ca0.3Mn3+7.2Fe3+1.4Mn2+0.3Sb1.2Si2O24
Help on Environment: Environment: In crystalline limestones and manganese-rich skarns in metamorphosed manganese deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1887
Help on Locality: Locality: At Langbanshyttan, Vermland, Sweden and the Sjo mines near Orebro in Orebro. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: After its locality.
Help on Name Pronunciation: Name Pronunciation: Langbanite + Pronunciation Say LANGBANITE