滇西北鲁甸花岗岩地球化学特征及铀矿找矿前景  

THE GEOCHEMICAL FEATURE AND U DEPOSIT PROSPECTING POTENTIALITY OF LUDIAN GRANITE IN NW YUNNAN

作　　者：伍荣林 覃勇凯 李灿清 

机构地区：[1]云南省核工业二〇九地质大队,云南昆明650032 [2]成都理工大学地球科学学院,四川成都610059

出　　处：《云南地质》2015年第3期419-425,共7页Yunnan Geology

基　　金：中央地质勘查基金项目;云南省维西县海尼地区铀矿普查(编号:2013531002)

摘　　要：鲁甸花岗岩按岩石谱系单位可分为5个单元,归并为2个序列。其中打米杵序列为富硅、富碱,且钾含量大于钠含量,属铝过饱和的S型花岗岩。该序列花岗岩岩石地球化学、稀土元素、微量元素地球化学等特征与华南地区典型的产铀矿花岗岩特征进行对比,都有明显的相似性。表明鲁甸花岗岩具有较好的铀矿成矿远景。Ludian granite can be divided into 5 units of 2 series according to the rock spectrogram, in which Damichu series is rich in Si, alkaline, K 〉 Na. It is A1 supersaturation S-type granite. The geochemistry, REE, trace element geochemical characteristics of this series granite are very similar to those of the typical U-forming granite in S China. Therefore, the U metallogenesis potentiality of Ludian granite is better.

关 键 词：S型花岗岩 岩石谱系单位 铀矿成矿远景 滇西北 

分 类 号：P612[天文地球—矿床学]