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Noun. (mineralogy) A hydrous potassium uranium sulfate mineral with chemical formula K4(UO2)6(SO4)3(OH)10ยท4(H2O), forming yellow to reddish-brown monoclinic-prismatic crystals with perfect cleavage and formerly used in the manufacture of paint.This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.
This entry was last updated on RefTopia from its source on 3/20/2012.