江西省万安县弹前岩体铀成矿规律与成矿预测分析  

Analysis of Uranium Metallogenic Regularity and Metallogenic Prediction of TanqianRock Mass in Wan'an County,Jiangxi Province

作　　者：朱钦 晏宗根 朱文韬 ZHU Qin;YAN Zonggen;ZHU Wentao(No.263 Geological Party of Jiangxi Nuclear Industry)

机构地区：[1]江西省核工业地质局二六三大队

出　　处：《现代矿业》2021年第12期103-108,共6页Modern Mining

基　　金：江西省万安县弹前岩体铀矿资源调查评价项目(编号:201941-1)。

摘　　要：万安弹前岩体位于桃山—诸广成矿带西缘,东邻兴国铀矿化集中区。区内燕山早期第一阶段中粗粒似斑状黑云母花岗岩和燕山早期第二阶段中粒似斑状二云母花岗岩均为富铀岩体,是铀成矿的铀源体和有利赋矿岩体;区内铀矿化主要集中于F_(1)和F_(2)断裂夹持区,不同岩体和地层接触带、构造的复合部位、构造与不同岩性接触带复合部位、构造膨胀部位可作为定位铀矿化体的主要部位;红色赤铁矿化、烟灰色粉末状黄铁矿化、紫黑色粉末状萤石矿化蚀变组合可作为本区找矿标志之一,区内控矿因素总体表现为岩浆岩—构造—热液活动联合控矿。以硅化破碎带亚型为主攻找矿类型,通过分析本区铀成矿地质特征,总结铀矿化特征、成矿规律,对本区进行了成矿预测,圈定了铀找矿远景区1片。Tanqian rock body in Wanan County is located in the western margin of Taoshan-Zhuguang uranium mineralization belt,east neighbor to Xingguo uranium mineralization concentration area.In the area,the first stage of early Yanshan medium coarse porphyroid biotite granite and the second stage of early Yanshan medium granular porphyroid two-mica granite are both uranium-rich rocks,which are uranium source bodies and favorable ore-bearing rocks for uranium mineralization.The uranium mineralization in this area is mainly concentrated in the F_(1) and F_(2) fault clamping area.The contact zone of different rock masses and strata,the compound position of structure,the compound position of structure and different lithologic contact zone,and the expansion position of structure can be used as the main location of uranium mineralization body.The combination of red hematite,smoky gray powdery pyrite and purple black powdery fluorite mineralization and alteration can be used as one of the prospecting markers in this area.The overall ore-controlling factors in this area are the combination of magmatic rock,structure and hydrothermal activity.Taking the subtype of silicified crushing zone as the main prospecting type,by analyzing the geological characteristics of uranium mineralization in this area,summarizing the characteristics and metallogenic regularity of uranium mineralization,the metallogenic prediction of this area is carried out,and a uranium prospecting prospect area is delineated.

关 键 词：铀成矿地质特征 铀矿化特征 成矿规律 

分 类 号：P619.14[天文地球—矿床学]