| Characteristics and origin of ore-forming fluids of Jinchangqing gold （copper） ore deposit （s） in Xiangyun, Yunnan Province |
| |
| 引用本文： | 何明勤,宋焕斌,刘家军,李朝阳.Characteristics and origin of ore-forming fluids of Jinchangqing gold （copper） ore deposit （s） in Xiangyun, Yunnan Province[J].中国地球化学学报,2005,24(2):136-143. |
| |
| 作者姓名： | 何明勤 宋焕斌 刘家军 李朝阳 |
| |
| 作者单位： | [1]OpenLab.ofOreDepositGeochemistry,InstituteofGeochemistry,ChineseAcademyofSciences,Guiyang550002,China／／LandResourcesEngineeringFacultyofKunmingUniversityofScienceandTechnology,Kunming650093,China [2]HongheUniversity,Mengzi661100,Yunnan,China [3]ChinaUniversityofGeosciences,Beijing100083,China [4]OpenLab.ofOreDepositGeochemistry,InstituteofGeochemistry,ChineseAcademyofSciences,Guiyang550002,China |
| |
| 基金项目： | Technology Projects，original Non-ferrous Metal Industry General Company，Planning Program，Foundation Projects of Yunnan Provincial Education Department |
| |
| 摘 要： | On the basis of results of the studies of primary fluid inclusions, and the hydrogen and oxygen isotope data, the authors concluded that the early-stage ore-forming fluid from the Jinchangqing gold(copper) ore deposit is a kind of sulfate type hot brine characterized by medium temperature and salinity,genetically related to the late-stage ore-forming fluid derived from an acidic and more reduetive environment. However, the late-stage ore-forming fluid is a sort of low temperature and low salinity chloride-type hot brine which originated from a lower pressure, acidic and more oxidative environment. In general, the ore fluids were derived from the late-stage, or largely from the early-stage groundwater-derived meteoric water, which has a 12‰-17‰ heavier oxygen isotopic composition than the original rain water (δ^18O=- 15.3‰), and were formed during gold mineralization as a product of oxygen isotope exchange during the reaction between ore-forming fluid and wall rocks under a lower water/rock ratio condition.
|
| 关 键 词： | 核结构流体 氢同位素 金核沉积矿 云南 |
| 收稿时间： | 1 January 2006 |
Characteristics and origin of ore-forming fluids of Jinchangqing gold (copper) ore deposit (s) in Xiangyun,Yunnan Province |
| |
| He Mingqin,Song Huanbin,Liu Jiajun,Li Chaoyang.Characteristics and origin of ore-forming fluids of Jinchangqing gold (copper) ore deposit (s) in Xiangyun,Yunnan Province[J].Chinese Journal of Geochemistry,2005,24(2):136-143. |
| |
| Authors: | He Mingqin Song Huanbin Liu Jiajun Li Chaoyang |
| |
| Institution: | (1) Open Lab. of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China;(2) Land Resources Engineering Faculty of Kunming University of Science and Technology, 650093 Kunming, China;(3) Honghe University, Mengzi, 661100 Yunnan, China;(4) China University of Geosciences, 100083 Beijing, China |
| |
| Abstract: | On the basis of results of the studies of primary fluid inclusions, and the hydrogen and oxygen isotope data, the authors concluded that the early-stage ore-forming fluid from the Jinchangqing gold (copper) ore deposit is a kind of sulfate type hot brine characterized by medium temperature and salinity, genetically related to the late-stage ore-forming fluid derived from an acidic and more reductive environment. However, the late-stage ore-forming fluid is a sort of low temperature and low salinity chloride-type hot brine which originated from a lower pressure, acidic and more oxidative environment. In general, the ore fluids were derived from the late-stage, or largely from the early-stage groundwater-derived meteoric water, which has a 12‰-17‰ heavier oxygen isotopic composition than the original rain water (δ 18 O= -15.3‰ ), and were formed during gold mineralization as a product of oxygen isotope exchange during the reaction between ore-forming fluid and wall rocks under a lower water/rock ratio condition. |
| |
| Keywords: | ore-forming fluid hydrogen and oxygen isotopes origin of ore-forming fluid Jinchangqing gold (copper) ore deposit Xiangyun Yunnan |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
|
