Mineralogy Database

Trimounsite-(Y) Mineral Data

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General Trimounsite-(Y) Information

Help on Chemical  Formula: Chemical Formula: (Y,REE)2Ti2SiO9
Help on Composition: Composition: Molecular Weight = 475.18 gm
   La,Ce,Pr,Nd,Sm,  15.15 %  RE   17.68 % REE2O3
   Yttrium          28.06 %  Y    35.64 % Y2O3
   Titanium         21.16 %  Ti   35.30 % TiO2
   Silicon           5.32 %  Si   11.38 % SiO2
   Oxygen           30.30 %  O
                   ______        ______ 
                   100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Y1.5REE0.5Ti2.1Si0.9O9
Help on Environment: Environment: In the dolomite portions of a talc deposit.
Help on IMA Status: IMA Status: Approved IMA 1990
Help on Locality: Locality: Trimouns talc deposit, 6 km northeast of Luzenac, Ariege, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality and the yttrium content.
Help on Name Pronunciation: Name Pronunciation: Trimounsite-(Y) + Pronunciation Say TRIMOUNSITE-(Y)
Help on Synonym: Synonym: IMA1989-042