| 四川平武县金洞沟金矿地质特征及其成因探讨 |
| |
| 引用本文： | 黄昌华,张成江,刘治恒.四川平武县金洞沟金矿地质特征及其成因探讨[J].现代地质,2010,24(1). |
| |
| 作者姓名： | 黄昌华 张成江 刘治恒 |
| |
| 作者单位： | 1. 成都理工大学,核技术与自动化工程学院,四川,成都,610059;四川省核工业地质调查院,四川,成都,610061
2. 成都理工大学,核技术与自动化工程学院,四川,成都,610059 |
| |
| 基金项目： | 核工业西南地质局和黄金工业管理局联合项目 |
| |
| 摘 要： | 金洞沟金矿床是位于四川省北部平武县境内的小型岩金矿床。在详细研究矿床地质特征的基础上,测试了石英包裹体均一温度、盐度、化学成分及H、O同位素组成,分析了金属硫化物(黄铁矿、方铅矿、闪锌矿)的S同位素组成,对金的成矿作用进行了深入探讨。研究结果表明:金洞沟金矿床为低温热液型金矿床,其成矿物源主要是志留系茂县群浅变质碎屑岩系,矿石中硫化物以黄铁矿为主,硫化物含量约1%,为少硫化物型矿石。流体包裹体及S、H、O同位素研究显示成矿流体是主要由大气降水组成的热液,成矿温度为125~185℃,平均温度为148.7℃,属低温热液型金矿床。在此基础上,提出金洞沟金矿床的成矿作用经历了原始含矿岩系(矿源层)的形成、区域变质作用衍生矿源层的形成、热液成矿作用及表生氧化富集等4个阶段,韧性剪切构造活动是引起金活化、迁移和富集的主要因素。该成果为该矿床成因的认识和找矿工作提供了参考。
|
| 关 键 词： | 金洞沟金矿床 低温热液型金矿床 矿床地球化学 矿床成因 四川平武县 |
Geological Characteristics and Genesis of the Jingdonggou Gold Deposit in Pingwu County,Sichuan Province |
| |
| HUANG Chang-hua,ZHANG Cheng-jiang,LIU Zhi-heng.Geological Characteristics and Genesis of the Jingdonggou Gold Deposit in Pingwu County,Sichuan Province[J].Geoscience——Journal of Graduate School,China University of Geosciences,2010,24(1). |
| |
| Authors: | HUANG Chang-hua ZHANG Cheng-jiang LIU Zhi-heng |
| |
| Institution: | HUANG Chang-hua1,2,ZHANG Cheng-jiang1,LIU Zhi-heng1(1.College of Applied Nuclear Technology , Automation Engineering,Chengdu University of Technology,Chengdu,Sichuan 610059,China,2.Sichuan Nuclear Geology Institute,Sichuan 610061,China) |
| |
| Abstract: | Jindonggou gold deposit is a small gold deposit located in Pingwu County,north of Sichuan Province.Based on a studied geological characteristics of the Jindonggou gold deposit,the authors measured the homogenization temperature,salinity,chemical composition,as well as H and O isotopic compositions of the fluid inclusions of the quartz,measured S isotopic composition of the metal sulfide(pyrite,galena and sphalerite),and systematically discussed the metallogenesis of the gold deposit.The results show that th... |
| |
| Keywords: | Jindonggou gold deposit epithermal deposit geochemistry of mineral deposit genesis of the deposit Pingwu County Sichuan Province |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
