Mineralogy Database

Micheelsenite Mineral Data

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General Micheelsenite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Y)3Al[PO3OH,CO3](CO3)(OH)6•12(H2O)
Help on Composition: Composition: Molecular Weight = 667.02 gm
   Calcium     12.02 %  Ca   16.81 % CaO
   Dysprosium   2.44 %  Dy    2.80 % Dy2O3
   Yttrium     13.33 %  Y    16.93 % Y2O3
   Aluminum     3.64 %  Al    6.88 % Al2O3
   Phosphorus   3.25 %  P     7.45 % P2O5
   Hydrogen     4.64 %  H    41.46 % H2O
   Carbon       2.16 %  C     7.92 % CO2
   Oxygen      58.53 %  O
              ______        ______ 
              100.00 %      100.24 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2YDy0.1Al0.9(PO3OH)0.7(CO3)1.2(OH)6•12(H2O)
Help on Environment: Environment: Late-stage hydrothermal product and in pegmatites, hornfels, marble zenoliths, and silicate cavities. Ettringite group, structure
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: Mont Saint-Hilaire, Quebec Canada and the Nanna pegmatite, Narsaarsuup Qaava, South Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for H. I. Micheelsen (1931-), of the University of Copenhagen, Denmark.
Help on Synonym: Synonym: IMA1999-033