矿床地质2026，Vol.45Issue(4)：773-788,16.DOI:10.16111/j.0258-7106.2026.04.003
新疆阿尔泰阔克锌铜多金属矿床成矿作用
Metallogenesis of Kuoke polymetallic Zn-Cu deposit in Altay,Xinjiang:Evi-dences from fluid inclusions and H,O,and S isotopes
摘要
Abstract
The Kuohe is a newly discovered polymetallic zinc-copper deposit in the Supute area of southern Altay in re-cent years.It includes a polymetallic zinc-copper mineralization system related to marine volcanic activity(miner-alization zones Ⅰ-Ⅳ)and a copper mineralization system related to magmatic hydrothermal process of diorite porphyrite(mineralization zone Ⅴ).The polymetallic zinc-copper mineralization system related to marine volca-nic activity is hosted in the Lower Devonian Kangbutiebao Formation volcanic-sedimentary rock series.The min-eralization zones and ore bodies are parallel to the bedding.The mineralization is mainly disseminated,veinlet,and stockworks types,the main metallogenic elements are zinc,copper,lead,gold,and silver,and has undergone the epidote stage,quartz-zinc-copper stage,and quartz-polymetallic gold stage.For the scientific issue of the metallogenesis of this mineralization system,studies on the geological characteristics of the deposit,in-situ sulfur isotope,microthermometry of fluid inclusions,and hydrogen and oxygen isotopes of quartz have been carried out.The results show that the δ34S values of sulfides range from-1.30‰ to 10.23‰,with an average of 4.20‰,indicating that the ore-forming material originated from marine volcanic rocks or volcanic gases.The homogeni-zation temperature of the quartz-polymetallic gold stage is 161～410℃,the fluid salinity w(NaCl)eqv is 0.20％～14.64％,and the density is 0.55～1.01 g/cm3,suggesting that the ore-forming fluids were a H2O-CO2-NaCl system that evolved from high to low temperature,medium to low salinity and medium to low density.The δDSMOW of quartz is-140‰ to-90‰,and the δ18OH2O value is-3.0‰ to 3.2‰,indicating that the ore-forming fluids were a mixture of deep-circulating seawater and magmatic water.Due to the decrease in temperature and pressure,water-rock exchange reactions,fluids mixing and other factors,gold,copper,and zinc minerals precipitated.In summa-ry,the polymetallic zinc-copper deposit(mineralization zones Ⅰ-Ⅳ)is a volcanic hydrothermal deposit formed within a marine volcanic-related mineralizing system.关键词
锌铜多金属矿/流体包裹体/H-O-S同位素/阔克/阿尔泰Key words
polymetallic Zn-Cu deposit/fluid inclusions/hydrogen-oxygen-sulfur stable isotope/Kuoke/Altay分类
天文与地球科学引用本文复制引用
何斌,王运珍,潘祎,郭强,俞王涛,李宁,杨富全..新疆阿尔泰阔克锌铜多金属矿床成矿作用[J].矿床地质,2026,45(4):773-788,16.基金项目
本文得到新疆维吾尔自治区地区专项资金项目"新疆阿尔泰苏普特一带铜多金属成矿规律研究与靶区优选"(编号:E6543003923000582001001)资助 （编号:E6543003923000582001001）
