桂林理工大学学报Issue(2)：243-250,8.DOI:10.3969/j.issn.1674-9057.2015.02.004
离子吸附型稀土矿床风化壳地球化学与风化物粒度研究--以姑婆山养民冲稀土矿床为例
Weathered material granularity and geochemistry of weathering crust in ion-adsorption type REE deposit-A case from Yangminchong of Guposhan
摘要
Abstract
Ion-adsorption type REE deposit is the main mining type of rare earth minerals in China.Based on the minerals and weathering characteristics of Guposhan,the weathering crust profile is subdivided into 6 weathered layers and 3 sub-weathed layers.Typical weathering crust specimens are selected as research objects and divided into 4 classes including less than 0.075 mm,0.075 -0.150 mm,0.150 -0.355 mm and more than 0.355 mm.The variation characteristics of REEs in different horizons and the grain size of minerals are studied.The results show that LREE such as La,Nd,Pr and Sm are main enrichment in weathered layer, and there is a close relationship between content and elements grain size.LREE are mainly concentrated in the clay layer with grain size is less than 0.075 mm.Ce element gradually decrease from the surface to deep weath-ering crust,less than 0.075 mm,relatively stable and significantly reduced in more than 0.075 mm.Eu ele-ment is abundant in sub-weathered layer and affected by the grain size of minerals.HREE such as Dy,Y are gradually enriched from the surface to the deep weathering crust,and significantly decreased in more than 0.075 mm.It can be concluded that the content of REE elements in study area is manily affected by the weath-ering horizons and wearhering granularity.关键词
稀土元素/离子吸附型稀土矿床/矿物粒度/风化壳剖面Key words
rare earth element/ion-adsorption type rare earth elements deposits/mineral grain size/weathe-ring crust分类
天文与地球科学引用本文复制引用
苑鸿庆,李社宏,程飞,裴秋明,张有军,孙明行,张海莹..离子吸附型稀土矿床风化壳地球化学与风化物粒度研究--以姑婆山养民冲稀土矿床为例[J].桂林理工大学学报,2015,(2):243-250,8.基金项目
中国地质调查局项目（1212011120354）；教育部地质工程中心开放基金项目 （）
