摘要
7801铀矿化点产于冕西岩体第四阶段早白垩世灰白色、浅紫色中细粒钾长花岗岩中。通过对该区铀矿化、构造、矿物及围岩蚀变特征的研究,认为该区铀矿化与碱交代作用密切相关,定位于次级断裂带上盘的更次级裂隙中。NE向节节马—小沟断裂为控矿构造,为含矿热液的上升提供了通道,从深部带来成矿热液,其上盘次级平行断裂及更次级断裂则是容矿构造,为铀矿化提供了容矿空间。铀矿体产于碱交代岩中,很少在其范围之外,矿体是碱交代岩的一部分。
The ore spot7801is an uranium ore spot which is confined to was in the grayish and purplish fine-grained K-feldspar granite of the Mianxi intrusion emplaced in the Early Cretaceous.The mineralization is controlled by NE-trending Jiejiema-Xiaogou fractures.The study of mineralization,structure,mineralogy and wallrock alteration indicates that the uranium mineralization was related to alkali metasomatism.The uranium orebody is a part of the alkali metasomatic rock.
作者
王战永
范永宏
孙悦
李巨初
姚毅锋
WANG Zhan-yong;FAN Yong-hong;SUN Yue;LI Ju-chu;YAO Yi-feng(No.280 Institute,CNNC,Guanghan,Sichuan618300;the College of Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu610059)
出处
《四川地质学报》
2017年第4期583-586,591,共5页
Acta Geologica Sichuan
关键词
铀矿
碱交代
矿化特征
小沟
uranium ore spot
alkali metasomatism
Xiao valley
作者简介
王战永(1986-),男,河南周口人,工程师,从事铀矿地质勘查研究
