The first discovery of mawsonite and other Cu-Fe-Sn sulfides in gold-sulfide-quartz ores

Abstract

To cite this article: V. A. Kovalenker (1981) The first discovery of mawsonite and other CuFe-Sn sulfides in gold-sulfide-quartz ores, International Geology Review, 23:1, 105-114,

Coupled substitutions in goldfieldite–tetrahedrite minerals from the Iriki mine, Japan

“…Also this paper first confirms the coupled substitution of Cu+(As,Sb) 3+ for V3(vacancy)Te 4+ in natural goldfieldite with Te = 2 to 2.74, based on Z(Te + Sb + As + Bi) = 4. Chemical analyses of Springer (1969), Tsepin et al (1977), Novgorodova et aL (1978, Kovalenker et al (1979Kovalenker et al ( , 1987, and Knittel (1989) indicate the occurrence of the Cu vacancy as discussed by Kalbskopf (1974) and Johnson (1982), and some of these authors mention that the extra charge caused by substituting Te 4+ for Sb 3+ may be compensated by the Cu vacancy. However, their data show the Cu vacancy to occur whether or not the number of Te atoms is greater than two, based on Z(Te + Sb + As + Bi) = 4, and, moreover, do not permit the charge balance to be maintained.…”

“…Charlat and Ldvy, 1974;Ixer and Stanley, 1980;Pattrick and Hall, 1983;Johnson et al, 1986), those of goldfieldite are few (e.g. from Goldfield in Ldvy, 1967, andSakurai, 1970; from Butte, Montana, U.S.A. in Springer, 1969, Criddle andStanley, 1986; from Kawazu, Japan in Kato and Sakurai, 1970;from Sardinia in Frenzel et al, 1975; from U.S.S.R. in Tsepin et al, 1977;Novgorodova et al, 1978;Kovalenker et al, 1979Kovalenker et al, , 1987Loginov etal., 1983;Spiridonov etal., 1984;Sakharova et al, 1984;lgumnova, 1986). Moreover, many of these data deviate from stoichiometry and the charges do not balance, probably because of uncertainty in electron microprobe analyses, impurity, Cu vacancy, and oxidation.…”

The Gold Mineralization of the Baranyevskoe Au-Ag Epithermal Deposit in Central Kamchatka

“…These minerals indicate some enrichment in tin at a late stage in the development of the ore-forming system. Mawsonite Cu 6 Fe 2 SnS 8 has been identified in association with pyrite and tetrahedrite in a vein orebody, and its formation is related to interactions during the substitution of the tin-bearing famatinite by tetrahedrite [47]. The gold-sulfosalt-quartz association identified in this study is in many respects similar to that from the Kairagach gold deposit, Uzbekistan, which is characterized by a Au-Sn-Bi-Se-Te geochemical profile; namely, it is comparable to the third generation of ore mineralization of Kairagach gold deposit: Bi-sulfosalts as well as native gold of high fineness, tetrahedrite-annivite series.…”