Mineralogy Database

Ferrowinchite Mineral Data

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General Ferrowinchite Information

Help on Chemical Formula: Chemical Formula: [ ](CaNa)Fe++4(Al,Fe+++)Si8O22(OH)2
Help on Composition: Composition: Molecular Weight = 931.34 gm
   Sodium     2.47 %  Na    3.33 % Na2O
   Calcium    4.30 %  Ca    6.02 % CaO
   Aluminum   2.17 %  Al    4.11 % Al2O3
   Iron      25.48 %  Fe   30.86 % FeO /  2.14 % Fe2O3
   Silicon   24.12 %  Si   51.61 % SiO2
   Hydrogen   0.22 %  H     1.93 % H2O
   Oxygen    41.23 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaNaFe2+4Al0.75Fe3+0.25(Si8O22)(OH)2
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition and for Howard J. Winch, Geological survey of India.
Help on Name Pronunciation: Name Pronunciation: Ferrowinchite + Pronunciation Say FERROWINCHITE