Mckelveyite-(Y) Mineral Data

General Mckelveyite-(Y) Information
Chemical Formula:	NaCa(Ba,Sr)3(Y,REE)(CO3)6•3(H2O)
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
Empirical Formula:	NaCa_0.83Na_0.07Sr_0.11Ba_2.79Sr_0.2Y_0.74REE_0.13Ca_0.12(CO₃)₆�3(H₂O)
Environment:	Eocene-aged lacustrine deposits. Hydrothermal carbonate veins in dolomite.
IMA Status:	Approved IMA 1965
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.
Name Origin:	Named after Vincent E. McKelvey, 1916-1985), director of the U.S. Geological Survey.
Name Pronunciation:	Mckelveyite-(Y) + Pronunciation