Mineralogy Database

Mckelveyite-(Y) Mineral Data

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General Mckelveyite-(Y) Information

Help on Chemical  Formula: Chemical Formula: NaCa(Ba,Sr)3(Y,REE)(CO3)6•3(H2O)
Help on Composition: Composition: Molecular Weight = 971.59 gm
   Barium           39.43 %  Ba   44.03 % BaO
   Sodium            2.53 %  Na    3.41 % Na2O
   Strontium         2.80 %  Sr    3.31 % SrO
   Calcium           3.92 %  Ca    5.48 % CaO
   La,Ce,Pr,Nd,Sm,   1.93 %  RE    2.25 % REE2O3
   Yttrium           6.77 %  Y     8.60 % Y2O3
   Hydrogen          0.62 %  H     5.56 % H2O
   Carbon            7.42 %  C    27.18 % CO2
   Oxygen           34.58 %  O
                   ______        ______ 
                   100.00 %       99.82 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaCa0.83Na0.07Sr0.11Ba2.79Sr0.2Y0.74REE0.13Ca0.12(CO3)6�3(H2O)
Help on Environment: Environment: Eocene-aged lacustrine deposits. Hydrothermal carbonate veins in dolomite.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: Green River Formation, Sweetwater County, Wyoming, USA and Cava Fabi Talc quarry near Lanzada, Val Malenco, Sondrio, Lombardy, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Vincent E. McKelvey, 1916-1985), director of the U.S. Geological Survey.
Help on Name Pronunciation: Name Pronunciation: Mckelveyite-(Y) + Pronunciation Say MCKELVEYITE-(Y)