Mineralogy Database

Dukeite Mineral Data

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General Dukeite Information

Help on Chemical  Formula: Chemical Formula: Bi+++24Cr++++++8O57(OH)6(H2O)3
Help on Composition: Composition: Molecular Weight = 6,499.55 gm
   Chromium   6.40 %  Cr   12.31 % CrO3
   Bismuth   77.17 %  Bi   86.03 % Bi2O3
   Hydrogen   0.19 %  H     1.66 % H2O
   Oxygen    16.25 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Bi24Cr8O57(OH)6(H2O)3
Help on Environment: Environment: Found on a specimen of pucherite.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Found on a museum specimen labeled from the San Jose mine, Brejauba, Minas Gerais, Brazil. Corrected locality is Lavra da Posse, Sao Jose de Berjauba, Conceicao do Mato Dentro County, Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Duke University, Duham, North Carolina, USA and for the Mary Duke Biddle Foundation.
Help on Synonym: Synonym: ICSD 89799
  IMA1999-021