江西花岗岩地球化学特征及铀成矿关系
投稿时间:2018-07-30  修订日期:2018-08-17  点此下载全文
引用本文:
摘要点击次数: 168
全文下载次数: 33
作者单位E-mail
昝芳 江西省核工业地质局二六五大队 123092322@qq.com 
李栋 江西省核工业地质局二六五大队  
刘院龙 江西省核工业地质局二六五大队  
中文摘要:花岗岩型铀矿是我国主要的铀矿类型,通过对江西多个花岗岩岩体进行主量元素地球化学分析,得出不同时代的花岗岩主量地球化学特征大同小异,但其中燕山早期的岩体酸度大、碱质高、钾含量大于钠含量、铝过饱和等一系列特征,是产铀花岗岩的特征,加之燕山早期岩浆活动频繁,是铀成矿最有利的条件。花岗岩的成因类型对矿化作用有着深刻的影响,良好的矿化均产于岩浆成因的“S”型花岗体中,后期矿化时代贯穿整个燕山期,延续到70-90Ma(接近喜山期),说明矿化与成岩作用的间隔时间很长,但是燕山早期与成矿关系最为密切。
中文关键词:江西  花岗岩  地球化学  铀矿  成矿特征
 
Geochemical characteristics of Jiangxi granite and uranium metallogenic relations
Abstract:Granite type uranium ore is the main type of uranium ore in China. Through the geochemical analysis of major elements in several granite bodies in Jiangxi province, it is concluded that the main geochemical characteristics of granite in different ages are much the same and little different. However, a series of characteristics, such as large acidity, high alkali quality, higher potassium content than sodium content, and aluminum oversaturation in the early Yanshan rocks, are the characteristics of uranium granite production. In addition, the early Yanshan magmatic activity is frequent, which is the most favorable condition for uranium mineralization. The genesis types of granite have a profound influence on mineralization. Good mineralization is produced in the s-type granitic body of magmatic origin. The late mineralization period runs through the whole Yanshanian period and continues to 70-90ma (near the Himalayan stage), indicating that mineralization and diagenesis take a long time, but the early Yanshan period is the most closely related to mineralization.
keywords:Jiangxi  granite  geochemistry  Uranium mine  metallogenic characteristics
查看全文  查看/发表评论  下载PDF阅读器
设备展厅
您是第4910847位访问者  备案许可证编号:京ICP备13036454号
版权所有:《中国矿业》杂志社有限公司
地  址: 北京市朝阳区安定门外小关东里10号院东小楼 邮编:100029 电话:010-68332570 88374940 E-mail: zgkyzzs@163.com