西藏冈底斯带东段岗讲铜钼矿床含矿斑岩地球化学特征  

Geochemical characteristics of the host porphyry of Gangjiang Cu-Mo deposit in east Gangdese belt of Tibet

作　　者：杨晓坤 姜华 王光旺 张裴培 张庆松[3] 

机构地区：[1]云南铜业(集团)有限公司,昆明650051 [2]拉萨天利矿业有限公司,拉萨850001 [3]四川省冶金地质勘查院,成都610051

出　　处：《地质找矿论丛》2013年第2期197-202,共6页Contributions to Geology and Mineral Resources Research

摘　　要：西藏冈底斯带东段的岗讲铜钼矿床产于复式岩体中,岩体主要由二长斑岩、英安斑岩和流纹斑岩类岩石组成,其岩性属于钙碱性系列岩石。岩石地球化学特征表明该复式岩体可能形成于碰撞后抬升期,矿化与低温低压的岩浆结晶分异环境有关。Gangjiang Cu-Mo deposit occurs in a complex rock body consisting mainly of monzonitic porphyry, dacitic porphyry and rhyolitic porphyry. The porphyries belong to the talc-alkaline rock series.Their geochemical characteristics indicate that the complex rock body may be formed in the post uplift period and the mineralization is related to crystal differentiation under low-temperature low condition of magma.

关 键 词：冈底斯 斑岩 铜钼矿床 地球化学 西藏 

分 类 号：P613[天文地球—矿床学] P618.41[天文地球—地质学]