Mineralogy Database

Povondraite Mineral Data

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General Povondraite Information

Help on Chemical  Formula: Chemical Formula: (Na,K)(Fe+++,Fe++)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4
Help on Composition: Composition: Molecular Weight = 1,156.50 gm
   Potassium   0.85 %  K     1.02 % K2O
   Sodium      1.49 %  Na    2.01 % Na2O
   Magnesium   3.78 %  Mg    6.27 % MgO
   Aluminum    1.40 %  Al    2.64 % Al2O3
   Iron       31.87 %  Fe   27.02 % FeO / 15.53 % Fe2O3
   Silicon    14.57 %  Si   31.17 % SiO2
   Boron       2.80 %  B     9.03 % B2O3
   Hydrogen    0.35 %  H     3.12 % H2O
   Oxygen     42.89 %  O
             ______        ______ 
             100.00 %       97.82 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.75K0.25Fe3+2.25Fe2+0.75Fe2+3.6Mg1.8Al0.6(BO3)3(Si6O18)(OH)4
Help on Environment: Environment: Found in hydrothermally altered basalt clasts in a metamorphosed evaporite deposit.
Help on IMA Status: IMA Status: Approved IMA 1993 (Dana # Changed)
Help on Locality: Locality: Cristalmuya gorge, near San Francisco asbestos mine, Chapare Province, Cochabamba Department, Bolivia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Pavel Povandra (1924-), mineralogits, Charles University, Prague, Czech Repubic.
Help on Name Pronunciation: Name Pronunciation: Povondraite + Pronunciation Say POVONDRAITE
Help on Synonym: Synonym: Ferridravite
  ICSD 72941
  IMA1978-075
  PDF 33-1261
  Povondraite - (61.3.1.6)
  Tourmaline