Bismuth tellurides (joseite-B, bismuthian tsumoite) in a Pb-Zn deposit from Tunaberg, Sweden
European Journal of Mineralogy Volume 5 Number 1 (1993), p. 165 - 170
published: Mar 4, 1993
manuscript accepted: Jun 22, 1992
manuscript received: Jan 16, 1992
ArtNo. ESP147050501013, Price: 29.00 €
Abstract Joseite-B (Bi4.08-4.14Pb0.02-0.03Sb0.00-0.04)4.10-4.16(Te1.85-2.01S0.83-1.05)2.84-2.90 and bismuthian tsumoite (Bi1.11-1.40Te0.54-0.82Pb0.01-0.02Sb0.00-0.09S0.00-0.03)2.00 from Tunaberg, Bergslagen, Central Sweden, occur in composite grains and in trails with native bismuth in galena-rich samples. Mineral textures suggest contemporaneous crystallization of native bismuth and the telluride mineral assemblage with the galena host, probably from Pb-Bi-Terich skarn-forming ore fluids. Cooling of Bi-Te-rich fluids below 350°C may have crystallized bismuthian tsumoite, which coexists with native bismuth only below 266°C.