Mineralogy Database

Dickinsonite Mineral Data

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General Dickinsonite Information

Help on Chemical Formula: Chemical Formula: KNa4Ca(Mn++,Fe++)14Al(PO4)12(OH)2
Help on Composition: Composition: Molecular Weight = 2,132.64 gm
   Potassium    0.92 %  K     1.10 % K2O
   Sodium       5.71 %  Na    7.70 % Na2O
   Lithium      0.07 %  Li    0.14 % Li2O
   Calcium      1.69 %  Ca    2.37 % CaO
   Manganese   24.73 %  Mn   31.93 % MnO
   Aluminum     1.01 %  Al    1.91 % Al2O3
   Iron        10.21 %  Fe   13.14 % FeO
   Phosphorus  17.14 %  P    39.27 % P2O5
   Hydrogen     0.18 %  H     1.65 % H2O
   Oxygen      38.34 %  O
              ______        ______ 
              100.00 %       99.21 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.5Li0.2Na5.3Ca0.9Mn2+9.6Fe2+3.9Al0.8(PO4)11.8(OH)3.9
Help on Environment: Environment: High temperature (800 deg C) primary mineral in granite pegmatites.
Help on IMA Status: IMA Status: Discredited IMA 2005 - Dana # Changed from 41.7.2.2
Help on Locality: Locality: Branchville, Fairfield County, Connecticut, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Reverend John William Dickinson (1835-1899), Redding, Connecticut, USA, an early collector of Branchville minerals. Dickinsonite is now the group name.
Help on Name Pronunciation: Name Pronunciation: Dickinsonite + Pronunciation Say DICKINSONITE
Help on Synonym: Synonym: ICSD 100870
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