The geological significance of Pb–Bi- and Pb–Sb-sulphosalts in the Damajianshan tungsten polymetallic deposit, Yunnan Province, China

摘要: Abstract The Sanjiang Tethyan domain in SE Asia is one of the most important mineral belts China. Cu, Pb–Zn, Ag, Au and Sn are resources this domain, while tungsten mineralization poorly reported. In study, we report on mineralogy recent discovered Damajianshan (DMJS) (–Cu–As–Mo–Bi) polymetallic deposit southern part related to Triassic quartz porphyry. Studies have shown that besides common ore minerals, such as native bismuth, bismuthinite, ikunolite, some specific minerals Pb–Bi- Pb–Sb-sulphosalts (e.g. izoklakeite, bournonite, cosalite, boulangerite) also been found. Based paragenetic assemblages, fluid inclusions, thermodynamic studies, physicochemical conditions were evaluated for entire metallogenic process. sulfur fugacity (logf S2 ) ranges from − 9.7 − 37 with ore-forming temperatures between 190 °C 330 °C, oxygen O2 − 37.5 − 38.5 when temperature 250 °C. show strong fluctuations broadly negative correlation, indicating these variations should be responsible significant factors leading formation DMJS deposit. Our mineralogical studies provide new information further exploration domain.