摘要
兰坪—思茅中新生代盆地中的铜矿床 ,主要产于由砂岩、粉砂岩和页岩组成的含盐红色碎屑岩建造中 ,故一些研究者将其与典型的陆相砂页岩型铜矿床相类比。但就铜矿化的产出形式、元素和矿物组合、矿石稀土配分特征以及同位素组成特点等而言 ,均与典型砂页岩型铜矿床存在显著差异 ,而与一些地热区的矿化作用相似。说明研究区砂页岩中的铜矿床具有特殊的成矿机理。
The copper deposits,occurring in Lan pi ng-Simao basin of western Yunnan,belong to a new type of copper deposit closely associated with continental exhalation and show many unique features.Because of being occurred in the Mesozonic and Cenzonic clastic rock formation composed of sandstone,siltite and shale,the copper deposits are comparable with the typi cal sandstone and/or shale-type copper deposits in the world.However there are obvious differences between the both in copper occurrence forms,element and mine ral paragenesis,REEs and their patterns,and isotopic compositions.Many features of the copper deposit are similar to that of hydrothermal mineralization areas. The copper deposits are special in metallogenic mechanism.
出处
《地质找矿论丛》
CAS
CSCD
2000年第3期216-223,共8页
Contributions to Geology and Mineral Resources Research
基金
国家重点基础规划研究项目!( G1 9990 4 3 2 0 8)
中国科学院"百人计划"
中国科学院与云南省科技攻关合作资助项目
关键词
砂页岩
铜矿床
成矿机制
兰坪-思茅盆地
sandstone and shale
copper deposit
Metallogenic mechanism
Lanping-Simao basin
western Yunnan
