岩石矿物学杂志2017，Vol.36Issue(4)：564-580,17.
安徽铜陵地区胡村铜矿床流体包裹体研究
Fluid inclusion evidence for the Hucun copper ore deposit in Tongling area of Anhui Province
摘要
Abstract
The Hucun copper deposit,located in the south of the Shizishan deposit in Anhui Province,is a typical skarn-type copper polymetallic deposit,which is mainly characterized by copper-gold orebodies in the shallow and copper-molybdenite orebodies in the depth.A systematic study of its ore-forming fluids of the shallow skarntype copper deposit indicates that three evolutionary stages could be recognized in its rock-forming and ore-forming process,i.e.,skam stage (Stage Ⅰ,subdivided into Ⅰ-1 and Ⅰ-2),quartz sulfide stage (StageⅡ,subdivided into Ⅱ-1,Ⅱ-2a and Ⅱ-2b stages) and carbonate stage (Stage Ⅲ).The results also show that there are three main types of fluid inclusions,namely liquid-rich phase (Type Ⅰ),subcrystal (Type Ⅱ) and gas-rich phase (Type Ⅲ).The evolution of ore-forming fluids at different stages are as follows:it was of high temperature (543～631℃) and moderate-high salinity (14.8％ ～20.1％ and 44％ ～50.1％) at Stage Ⅰ,medium temperature (172～298℃) and low-moderate salinity (5.9 ％ ～ 16.9 ％) at Stage Ⅱ,and medium-low temperature (158～247℃) and low-moderate salinity (1.7％～6.2％) at Stage Ⅲ].H-O isotope studies indicate that ore-forming fluid originated from magmatic water and then was mixed with meteoric water at the sulfide metallogenic stage.Geochemical characteristics of fluid inclusions reveal that the temperature was the main controlling factor for the shallow orebodies,the copper migrated at high temperature and then the ore-forming materials began to precipitate and concentrate to mineralize when the temperature rapidly fell with the continuous mixing of meteoric water and ore-forming fluids.关键词
铜陵/胡村/铜矿床/流体包裹体/H-O同位素Key words
Tongling/Hucun/copper deposit/fluid inclusion/H-O isotope分类
天文与地球科学引用本文复制引用
郑平,文春华..安徽铜陵地区胡村铜矿床流体包裹体研究[J].岩石矿物学杂志,2017,36(4):564-580,17.基金项目
湖南省教育厅科学研究项目(16C0416) （16C0416）
中南大学博士后课题(201670)The Scientific Research Project of Hunan Provincial Education Department (16C0416) （201670）
The Postdoctoral Research Program of Central South University(201670) （201670）
