【作者】 徐文炘； 李蘅； 李毅； 陈民扬； 庞春勇；

【Author】 XUWenxin LI Heng LI Yi CHEN Minyang PANG Chunyong(Guilin Research Institute of Geology for Mineral Resources,Guilin,Guangxi,541004;Guangzhou University, Guangzhou,510275)

【机构】 桂林矿产地质研究院；

【摘要】 我国陆相次火山岩型铜银矿床分布广泛,银矿与酸性岩有关,铜矿与次英安玢岩有关。形成时代为燕山早期和晚期。石英的δ¹⁸O值在+7.9‰～+16.3‰之间,δ¹⁸O_H2O值在-3.0‰～+8.1‰之间,δD在-55‰～-106‰之间。硫化物的δ³⁴S值在-9.8‰～+9.6‰之间,硫化物的硫同位素富集顺序为δ³⁴S_py>δ³⁴S₍sp>δ³⁴S_Gn>δ³⁴S_po,硫化物矿物对平衡温度在160℃～400℃,大多数溶液的硫同位素平均组成(δ³⁴S_ΣS为+2‰～+5‰,个别为+20‰。更多还原

【Abstract】 The Cu-Ag ore deposit of continental Sub-Volcanic-Rock-Type Cu-Ag Ore Deposit are dispersed over our country. The Ag-ore-forming relates to acidic rock and Cu-ore-forming relates to sub-dacite. The era og forming is early and late stage of YanShan. The δ 18O value of quartz is from +7.9‰ to +16.3‰. The δ 18OH2O value is from -3.0‰ to +8.1‰. δ D is from -55‰ to -106‰. δ 34S value of sulphide is from -9.8‰ to +9.6‰. The enrich S isotope of sulphide in order is δ 34Spy, δ34SSp, δ 34SGn, δ 34Sp0. The balance temperature of sulphide ore is from 160℃ to 400℃. Mostly the value of S isotope in solution is from +2‰ to +5‰, someone is +20‰.更多还原