桂林理工大学学报Issue(3)：431-438,8.DOI:10.3969/j.issn.1674-9057.2014.03.004
粤北石人嶂钨矿床稀土元素地球化学特征及其指示意义
Rare earth elements geochemical characteristics and implication for ore genesis in Shirenzhang tungsten deposit,north Guangdong
摘要
Abstract
By systematically comparing REE geochemical characteristics of granite in Mt.Lianhuashan,tung-sten veins,greisen and side-granite which has close relationship with mineralization,the paper discussed the metallogenic environment and sources of Shirenzhang tungsten deposit in northern Guangdong.It has been shown that REE components of facial-type greisen,vein-side greisen and two types of related granite are obvious different.They have different material sources,which infer to two stages of magmatic intrusion and superim-posed hydrothermal activity.The REE patterns of three types of granite in the deep tungsten vein and its vein-side greisen are very similar,indicating the same substances and hydrothermal sources.ΣREE and δEu of the hidden granite body gradually increase from shallow to deep,showing that the degree of magmatic crystallization differentiation gradually decreased,providing mineral source for the formation of tungsten deposit.REE patterns of greisen and granite have certain similarities,LREE enrichment and a strong negative Eu anomaly.But most quartz veins have a positive Eu anomaly,enriched in LREE relatively.As mineralization time goes by,metallo-genic environment changes from the reducing to the relative oxidizing.Therefore,there are similarities and in-heritance between ore-forming hydrotherm of Shirenzhang tungsten deposits and late magmatic hydrotherm.A-bove all,these results suggested that the metallogenic material may be also partly from upper crust in addition to muscovite granite in the deep.关键词
花岗岩/云英岩/钨矿脉/稀土地球化学/石人嶂钨矿床Key words
granite/greisen/tungsten vein/REE geochemistry/Shirenzhang tungsten deposit分类
天文与地球科学引用本文复制引用
周癑,黄朝柱,韦龙明,周娟娟,翁海蛟,陈梦杰..粤北石人嶂钨矿床稀土元素地球化学特征及其指示意义[J].桂林理工大学学报,2014,(3):431-438,8.基金项目
国家深部探测计划专项（SinoProbe-03-01）；全国危机矿山接替资源勘查专项典型矿床研究项目（20109908-1）；广西地质工程中心重点实验室基金项目 （）
