现代地质2017，Vol.31Issue(2)：246-257,12.
陕西省华阳川铀铌铅矿床碳酸岩岩石学及地球化学特征
Petrologic and Geochemical Characteristics of Carbonatites in Huayangchuan U-Nb-Pb Deposit, Shaanxi Province
摘要
Abstract
The Huayangchuan U-Nb-Pb deposit is a unique metallogenic type in the Xiaoqinling mineralization belt.The broken belt of carbonatite vein is important ore-forming space.The minerals in unmineralized carbonatites are mainly calcite,and there are few other minerals.Uranium mineralized carbonatites include a variety of minerals,major minerals of which are calcite;and minor minerals of which are amphibole,biotite,sphene,allanite,batafite,barite,apatite,quartz,magnetite,alkali feldspar.Carbonatites are characterized by high REE contents,whose δ13 CV-PDB and δ18Ov-sMOwvalues show the typical characteristics of igneous carbonatite.Based on the diagrams showing 87Sr/86Sr vs.206pb/204pb,207pb/204pb vs.206pb/20apb and 143Nd/144Nd vs.87Sr/86Sr of carbonatite veins,the authors consider that these carbonatite veins are crystal-fractionational products of alkaline silicate-carbonate melt-solution originated from the EMI.关键词
碳酸岩脉/岩石学/稀土元素/同位素地球化学/华阳川铀铌铅矿床/陕西省Key words
carbonate vein/petrology/REE/isotopic geochemistry/Huayangchuan U-Nb-Pb deposit/Shaanxi Province分类
天文与地球科学引用本文复制引用
惠小朝,蔡煜琦,何升,冯张生..陕西省华阳川铀铌铅矿床碳酸岩岩石学及地球化学特征[J].现代地质,2017,31(2):246-257,12.基金项目
中国地质调查局项目“铀矿整装勘查区跟踪及评估”(地DC1701-1). （地DC1701-1）
