Mineralogy Database

Arrojadite-(BaFe) Mineral Data

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General Arrojadite-(BaFe) Information

Help on Chemical Formula: Chemical Formula: (Ba,K,Pb)Na3(Ca,Sr)(Fe++,Mg,Mn)14Al(PO4)11(PO3OH)(OH,F)2
Help on Composition: Composition: Molecular Weight = 2,242.07 gm
   Potassium    0.17 %  K     0.21 % K2O
   Barium       4.90 %  Ba    5.47 % BaO
   Sodium       3.08 %  Na    4.15 % Na2O
   Strontium    0.78 %  Sr    0.92 % SrO
   Calcium      1.43 %  Ca    2.00 % CaO
   Magnesium    6.18 %  Mg   10.25 % MgO
   Manganese    0.49 %  Mn    0.63 % MnO
   Aluminum     1.20 %  Al    2.27 % Al2O3
   Iron        20.18 %  Fe   25.96 % FeO
   Phosphorus  16.58 %  P    37.99 % P2O5
   Hydrogen     0.09 %  H     0.80 % H2O
   Lead         9.24 %  Pb    9.96 % PbO
   Oxygen      35.68 %  O
              ______        ______ 
              100.00 %      100.61 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3Ba0.8K0.1PbCa0.8Sr0.2Fe2+8.1Mg5.7Mn2+0.2Al(PO4)12(OH)2
Help on Environment: Environment: In a phengitic quartzite. The species name sigimundite is replaced by the name arrojadite-(BaFe)
Help on IMA Status: IMA Status: Approved IMA 1996 (Dana # Added)
Help on Locality: Locality: Near Madesimo, Spluga Valley, Central Alps, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Originally for Pietro Sigismund (1874-1962), renamed arrojadite-(BaFe) in 2005 by the IMA.
Help on Name Pronunciation: Name Pronunciation: Arrojadite-(BaFe) + Pronunciation Say ARROJADITE-(BAFE)
Help on Synonym: Synonym: IMA1994-033
  IMA2005 No 05-D
  Sigismundite