RRUFF Ideal Chemistry changed from "K3Zr2H(Si3O9)2·3H2O" to "K3Zr4+2H(Si3O9)2·3H2O"
Mineral Comment changed from
Khomyakov A P, Voronkov A A, Kobyashev Y S, Polezhaeva L I (1983) Umbite and paraumbite, new potassium zirconosilicates from the Khibina alkalic massif, Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 112, issue 4, 461-469
Dunn P J, Fleischer M, Francis C A, Langley R H, Kissin S A, Shigley J E, Vanko D A, Zilczer J A (1984) New mineral names, American Mineralogist 69, 810-815
to
Khomyakov A P, Voronkov A A, Kobyashev Y S, Polezhaeva L I (1983) Umbite and paraumbite, new potassium zirconosilicates from the Khibina alkalic massif, Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 112(4), 461-469
