Mineralogy Database

Julgoldite-(Fe+++) Mineral Data

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General Julgoldite-(Fe+++) Information

Help on Chemical  Formula: Chemical Formula: Ca2Fe+++(Fe+++,Al)2(SiO4)(Si2O7)(O,OH)2•(H2O)
Help on Composition: Composition: Molecular Weight = 2,199.83 gm
   Calcium    14.57 %  Ca   20.39 % CaO
   Magnesium   0.22 %  Mg    0.37 % MgO
   Aluminum    1.35 %  Al    2.55 % Al2O3
   Iron       27.16 %  Fe   38.84 % Fe2O3
   Silicon    15.32 %  Si   32.78 % SiO2
   Hydrogen    0.64 %  H     5.73 % H2O
   Oxygen     40.73 %  O
             ______        ______ 
             100.00 %      100.65 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca8Fe3+2.7Al1.1Mg0.2Fe3+8Si12O42(OH)14
Help on Environment: Environment: Fracture filling in hematite-magnetite ore from the Amerika stope at Langban.
Help on IMA Status: IMA Status: Approved IMA 1971
Help on Locality: Locality: Langban, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in 1971 by Moore for Julian Royce Goldsmith (1918-), American geochemist, University of Chicago.
Help on Name Pronunciation: Name Pronunciation: Julgoldite-(Fe+++) + Pronunciation Say JULGOLDITE-(FE+++)
Help on Synonym: Synonym: Oxyjulgoldite