Mineralogy Database

Johillerite Mineral Data

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General Johillerite Information

Help on Chemical Formula: Chemical Formula: Na(Mg,Zn)3Cu(AsO4)3
Help on Composition: Composition: Molecular Weight = 610.00 gm
   Potassium    0.19 %  K     0.23 % K2O
   Sodium       2.90 %  Na    3.91 % Na2O
   Magnesium    8.69 %  Mg   14.40 % MgO
   Aluminum     0.27 %  Al    0.50 % Al2O3
   Zinc         1.39 %  Zn    1.73 % ZnO
   Iron         2.38 %  Fe    3.40 % Fe2O3
   Copper      16.15 %  Cu   20.21 % CuO
   Arsenic     36.36 %  As   55.76 % As2O5
   Phosphorus   0.20 %  P     0.47 % P2O5
   Oxygen      31.47 %  O
              ______        ______ 
              100.00 %      100.63 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.77K0.03Mg2.18Zn0.13Cu1.55Fe3+0.26Al0.06As2.96P0.04O12
Help on Environment: Environment: Found in cavities in altered tennantite-chalcocite ore.
Help on IMA Status: IMA Status: Approved IMA 1982
Help on Locality: Locality: Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Johannes Eric Hiller (1911-1972), professor of mineralogy, Stuttart, Germany.
Help on Name Pronunciation: Name Pronunciation: Johillerite + Pronunciation Say JOHILLERITE
Help on Synonym: Synonym: ICSD 63284
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