地质找矿论丛2012，Vol.27Issue(4)：491-497,7.DOI:10.6053/j.issn.1001-1412.2012.04.015
Re-Os同位素体系在金属矿床中的应用
Applications of the Re-Os isotope system to metal deposits
张苏坤 1郑有业 2孙祥 3郭俊卫2
作者信息
- 1. 中国地质大学(北京)地球科学与资源学院,北京100083
- 2. 中国地质大学地质过程与矿产资源国家重点实验室,北京100083
- 3. 中国地质大学(武汉)资源学院,武汉430074
- 折叠
摘要
Abstract
Re-Os isotope system has become one of the most important age dating and tracing methods of metal deposits. The principle of Re-Os isotope system and the basic chemical properties of rhenium and Osmium are briefly sketched and new research results at home and acroad are systemically reviewed. Now Re-Os isotope analysis is not confined to date molybdenite and Cu-Ni sulfide ore and the analysis Re-Os i-sotope analysis of pyrite, arsenopyrite, pyrrhotite, pentlandite and sphalerite are often used to date gold deposits, lead-zinc deposits and Sedex cobalt (gold) deposits. Compared with primitive mantle, the crust rocks have higher 187Os/188Os, γOs and Re/Os values, so the Re-Os isotopic compositions of sulfides or ores and the Os—Re/Os diagram can be used to trace the origins of ore-forming materials in porphyry deposits, gold deposits, lead-zinc deposits and Cu-Ni sulfide deposits while rhenium content of molybdenite could trace the ore-forming materials sources. Combined with other isotopic analysis (187 Os/188Os —87Sr/ 86 Sr) Re-Os isotope systems could discriminate the contribution of different end-member components in the ore-forming materials.
关键词
Re-Os同位素体系/金属矿床/成矿时代/成矿物质来源Key words
Re-Os isotope system/ metal deposits/ ore-forming times/ source of ore-forming material分类
天文与地球科学引用本文复制引用
张苏坤,郑有业,孙祥,郭俊卫..Re-Os同位素体系在金属矿床中的应用[J].地质找矿论丛,2012,27(4):491-497,7.
