Mineralogy Database

Caysichite-(Y) Mineral Data

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General Caysichite-(Y) Information

Help on Chemical  Formula: Chemical Formula: Y2(Ca,Gd)2Si4O10(CO3)3(H2O,O,OH)•3H20
Help on Composition: Composition: Molecular Weight = 819.17 gm
   Calcium      8.81 %  Ca   12.32 % CaO
   Gadolinium   3.84 %  Gd    4.43 % Gd2O3
   Yttrium     21.71 %  Y    27.57 % Y2O3
   Silicon     13.71 %  Si   29.34 % SiO2
   Hydrogen     0.86 %  H     7.69 % H2O
   Carbon       4.88 %  C    17.89 % CO2
   Oxygen      46.19 %  O
              ______        ______ 
              100.00 %       99.23 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Y2Ca1.8Gd0.2Si4O10(CO3)3.33(OH)0.33•3.33(H2O)
Help on Environment: Environment: Occurs in granite pegmatite lining cavities.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: Evans-Lou feldspar mine, Portland West Township, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition (Ca, Y, Si, CO3).
Help on Synonym: Synonym: ICSD 200418
  IMA1973-044
  PDF 26-1394