Mineralogy Database

Gillespite Mineral Data

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General Gillespite Information

Help on Chemical  Formula: Chemical Formula: BaFe++Si4O10
Help on Composition: Composition: Molecular Weight = 465.51 gm
   Barium   29.50 %  Ba   32.94 % BaO
   Iron     12.00 %  Fe   15.43 % FeO
   Silicon  24.13 %  Si   51.63 % SiO2
   Oxygen   34.37 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: BaFe2+Si4O10
Help on Environment: Environment: In a glacial moraine (Dry Delta, Alaska, USA); probably from a contact metamorphic zone (Trumbull Peak, California, USA).
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1922
Help on Locality: Locality: Dry Delta, Alaska Range, Alaska, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Frank Gillespie, of Richardson, Alaska, USA, who discovered the first specimen.
Help on Name Pronunciation: Name Pronunciation: Gillespite + Pronunciation Say GILLESPITE