%0 Journal Article
%T A Note on the Chemical Composition of Nuffieldite Solid-Solution From Sulphide Mineralizations in the Western Carpathians, Slovakia
%A Jaroslav Pr ek
%A Emil Makovicy
%A Martin Chovan
%A Alexander Smirnov
%J Mineralogia
%@ 1899-8526
%D 2006
%I 
%R 10.2478/v10002-007-0005-x
%X The chemistry of the rare sulphosalt nuffieldite from three localities in Slovakia is examined. Nuffieldite is a part of a complex association of Bi sulphosalts accompanying tetrahedrite mineralization in some sulphide deposits in the Western Carpathians. Cu + Pb = (Bi, Sb) + vac. substitution in nuffieldite and the general formula Cu1+xPb2Bi2(PbxSbyBi1-x-y)S7 where 0 < x < 0.34; and 0.32 < y < 0.45 are confirmed. Decreasing Sb content with increasing copper content indicates a predominant substitution of Bi by Sb in nuffieldite.
%K nuffieldite
%K Bi sulphosalts
%K chemical composition
%K Cu + Pb = (Bi
%K Sb) + ¡õ substitution
%U http://versita.metapress.com/content/8045v19047q8n202/?p=12e1be26a1cd4382b679a62ee3c4c6a0&pi=1