Existing forms of REE in gold-bearing pyrite of the Jinshan gold deposit,Jiangxi Province,China
来源期刊：Journal of Rare Earths2009年第6期
论文作者：毛光周 华仁民 高剑峰 李伟强 赵葵东 龙光明 陆慧娟
文章页码：1079 - 1087
摘 要：Rare earth element（REE） is widely used in various fields of geology.Study of the existing forms of REE in geological objects is a necessity for us to solve geological problems related with REE.This paper tried to make it clear the existing forms of REE in gold-bearing pyrite in Jinshan gold deposit by stepwise dissolution test with ICP-MS analysis.Results showed that content of REE in fluid-inclusions of gold-bearing pyrite was very low,which only took about 0.07%-0.70% of the ΣREE,and that of pyrite phase took about 4.87%-17.00%,whereas higher REE contents of studied pyrites were mainly from Zr-rich silicate micro-mineral phase wrapped in sulfides,i.e.,82.30%- 94.99%,which basically controlled the REE contents of pyrite.The REE contents in silicate phase accounted for part of ΣREE of the original liquids from which pyrite crystallized and was separated out.Therefore,the REE composition in pyrite mineral can be considered as the reflection of the composition of pyrite-forming fluid.It is thus possible to trace the sources and features of ore-forming fluid by studying the characteristics of REE in pyrite.
毛光周1,2，华仁民2，高剑峰2,3，李伟强2，赵葵东2，龙光明2，陆慧娟2
1. State Key Laboratory of Continental Dynamics,Department of Geology,Northwest University2. State Key Laboratory of Mineral Deposit Research,Department of Earth Science,Nanjing University3. Department of Earth Science,The University of Hongkong
摘 要：Rare earth element（REE） is widely used in various fields of geology.Study of the existing forms of REE in geological objects is a necessity for us to solve geological problems related with REE.This paper tried to make it clear the existing forms of REE in gold-bearing pyrite in Jinshan gold deposit by stepwise dissolution test with ICP-MS analysis.Results showed that content of REE in fluid-inclusions of gold-bearing pyrite was very low,which only took about 0.07%-0.70% of the ΣREE,and that of pyrite phase took about 4.87%-17.00%,whereas higher REE contents of studied pyrites were mainly from Zr-rich silicate micro-mineral phase wrapped in sulfides,i.e.,82.30%- 94.99%,which basically controlled the REE contents of pyrite.The REE contents in silicate phase accounted for part of ΣREE of the original liquids from which pyrite crystallized and was separated out.Therefore,the REE composition in pyrite mineral can be considered as the reflection of the composition of pyrite-forming fluid.It is thus possible to trace the sources and features of ore-forming fluid by studying the characteristics of REE in pyrite.
关键词：
