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McKelveyite, Ba3NaCa0.75U0.25Y(CO3)6·3(H2O) is a yellow, lemmon yellow, black, greenish gray, white, or gray vitreous mineal of the donnayite-(Y) - Weloganite series. It is a hydrous sodium barium rare-earth uranium carbonate and was named after Vincent E. McKelvey, (1916-1985), director of the United States Geological Survey. Mildly radioactive producing alpha particles and beta particles, as well as gamma rays due to its uranium content. Examples have been found in many locations however it is common to the Green River Formation, Sweetwater County, Wyoming, USA.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "McKelveyite". A list of authors is available in Wikipedia.|