Mineralogy Database

Potassiccarpholite Mineral Data

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General Potassiccarpholite Information

Help on Chemical Formula: Chemical Formula: (K,Na,[ ])(Li,Mn++)2Al)4Si4O12(OH)4(F,OH)4
Help on Composition: Composition: Molecular Weight = 656.83 gm
   Potassium   3.33 %  K     4.02 % K2O
   Sodium      0.39 %  Na    0.52 % Na2O
   Lithium     0.63 %  Li    1.36 % Li2O
   Manganese  10.54 %  Mn   13.61 % MnO
   Aluminum   15.82 %  Al   29.88 % Al2O3
   Iron        1.11 %  Fe    1.42 % FeO
   Silicon    17.45 %  Si   37.32 % SiO2
   Hydrogen    0.82 %  H     7.36 % H2O
   Oxygen     42.31 %  O
   Fluorine    7.61 %  F     7.61 % F
                -   %   F    -3.20 % -O=F2    
             ______        ______ 
             100.00 %       99.90 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.56Na0.11Mn2+1.26Fe2+0.13Li0.6Al3.85Si4.08O12(OH)4F2.63(OH)1.37
Help on Environment: Environment: Miarolitic cavities in an anorogenic Tertiary granite pluton. Carpholite group
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Fall Creek drainage, in the vicinity of Glens Peak, Boise County, Idaho (corrected from Sawtooth Batholith location). Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the potassium-dominant member of carpholite.
Help on Synonym: Synonym: IMA2002-064
  Potassic-carpholite - Renamed Potassiccarpholite by Mineralogical Record, v39 (2008), p131