Sulfur Isotope Geochemistry Of Metallogenic Belt Typical Deposits In Gangdese Of Tibet

The Gangdese-Nyainqentanglha mineralization zone with important metallicmineral deposits found in recent years. According to the study showed that the mineraldeposits of this region is concentrated in the porphyry copper and skarn-type deposits,isotope studies are becoming increasingly sophisticated, the main stable isotoperesearch has focused on the C,H,O,S,Pb isotopic, but more The focus in each mine, theisotope study of mineralization with less. Therefore, in a large number of field work onthe basis of comprehensive utilization of the ore deposit geochemistry of ore depositsand other multi-disciplinary theories and methods, the A-Ma metallogenic belt,Mongolia and Asia, pull the house, new Ga fruit, male village, red river, hole pull, eightimportant Qulong skarn deposits, porphyry and porphyry-skarn deposits expand theanatomy, the comparative analysis of the sulfur isotope characteristics of each deposit.Eight deposits occur in the contact zone and surrounding rock acid rock andcarbonate strata, and occur by the wall-rock alteration and magmatic rocks, lithology,which constructed with the role. The ore-bearing strata based on carbonatemineralization provides favorable conditions of the surrounding rock. East-westfracture (mengyaa deposits), northwest-trending faults (xingaguo deposits, pull thehousing deposit), nappe sliding nappes (Jiama deposit) to control the location of theore-forming rock is also an important ore guide mine construction. In addition, thecontact zone structure, the anticline core (pull the housing deposit) and layer brokenbelt (xingaguo deposit) is also an important lead ore, ore structure. Mainly ofsilicification and skarn wallrock alteration control the spatial distribution of themineralization intensity and ore types.Sulfur isotope study have shown that the sources of sulfur isotopes in variousmining areas, regardless of the skarn-type deposits, or porphyry-type deposits andporphyry-skarn-type deposits.the sulfur isotope distribution has a more obvious towerdistribution of each The sulfur isotope Gangdese metallogenic belt of mine sulfurisotopic composition close to each mining area.there are some differences, such asXiongcun mine sulfide output, almost no sulfate. Different geological sulfur isotopetemperature range has shown in different types of deposits. formation of depositprocession has close relationship with the sulfur fugacity.Eight typical skarn deposits in skarn mineral assemblages associated element, theore-forming temperature, and the differences in the isotopic composition,whichreflects the constraints of the spatial distance of the mineralized system andmineralization rock mineralization. Entire mineralization with mineralization elements are largely derived from the shell Man, and different types of deposits reflectdifferences in the S isotope characteristics.