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Publikováno v:
European Journal of Mineralogy. 6:503-510
Potassium-rich nenadkevichite, Na 0.6 K 1.5 {(Nb 0.6 Ti 0.4 )(Nb 0.5 Ti 0.5 )[Si 4 O 12 ](O,OH) 2 }.1.6H 2 O, M = 582.9, monoclinic, space group Cm, a = 14.692(4), b = 14.164(4), c = 7.859(3) A, β = 117.87(2)°, V = 1445.7(1) A 3 , Z = 4, ρ c = 2.6