Mineralogy Database

Vyuntspakhkite-(Y) Mineral Data

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General Vyuntspakhkite-(Y) Information

Help on Chemical  Formula: Chemical Formula: (Y,Yb,Er)4Al2AlSi5O18(OH)5
Help on Composition: Composition: Molecular Weight = 1,118.90 gm
   La,Ce,Pr,Nd,Sm,  12.61 %  RE   14.71 % REE2O3
   Yttrium          14.14 %  Y    17.96 % Y2O3
   Ytterbium        20.26 %  Yb   23.07 % Yb2O3
   Aluminum          7.31 %  Al   13.81 % Al2O3
   Silicon          12.40 %  Si   26.53 % SiO2
   Hydrogen          0.45 %  H     3.99 % H2O
   Oxygen           32.83 %  O
                   ______        ______ 
                   100.00 %      100.07 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Y1.78Yb1.31REE0.98Al3.03Si4.94O18(OH)4.96
Help on Environment: Environment: Two generations of crystals occur in fluorite in "amazonite" pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1987
Help on Locality: Locality: Mt. Vyuntspakhk, 5 km southeast of Mt. Ploskaya, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality and its yttrium content.
Help on Name Pronunciation: Name Pronunciation: Vyuntspakhkite-(Y) + Pronunciation Say VYUNTSPAKHKITE-(Y)
Help on Synonym: Synonym: ICSD 20861
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