摘要
对比研究了个旧不同类型岩(矿)石(蚀变花岗岩、钙质泥岩、大理岩、矽卡岩矿石、层状矿石和脉状矿石)的稀土元素、微量元素地球化学特征,借以示踪不同类型矿床的成矿物质来源。研究表明不同类型矿石中的稀土元素配分曲线较为相似,成矿物质具有同源性,并与本区的花岗岩具有一定的成因联系。由于其成矿方式的不同,不同类型矿石中的稀土元素特征和矿物组合特征略有差异,脉状矿石和层状矿石中稀土含量相对较少且富集轻稀土,而矽卡岩矿石中稀土含量相对较多且轻、重稀土的含量变化较大。
REE geochemical characteristics were studied by comparing different-type ores (rocks) (altered granite, ore-hosted rock, skarn ores, bedded ores and vein ores) to trace metallogenic matter origin. The result indicates that the metallogenic matters for different type ores are from the same origin mainly related to granites in genesis. In addition, because of the differences of metallogenic way, there are some differences for the characteristics of REE and mineral combination in skarn ores, bedded ores and vein ores. LREE are enriched relatively in vein ores and bedded ores and their total REE are lower than that in skarn ores with wide ranges for LREE and HREE.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2005年第2期228-234,共7页
Journal of the Chinese Society of Rare Earths
基金
云南省院省校合作项目(2000YK 05)
国家重大基础研究规划项目(2001CB409805)
国家"十五"科技攻关项目(2004BA615A 03)
中国科学院矿床地球化学研究所资助项目
