摘要
云南个旧东矿区西部凹陷带岩体内部蚀变花岗岩型Sn、Cu多金属矿床是近年来新发现的矿床.通过对矿床地质特征、蚀变分带特征、含矿岩体地球化学组成以及深部找矿远景的系统研究,认为该类矿床属于个旧东区花岗岩岩浆热液成矿多样性系统的组成部分,是产于花岗岩岩体边缘相-过渡相的蚀变花岗岩型多金属矿床,它属于岩浆期后中高温热液矿床.钾长石化、黄铁矿化、萤石化、电气石化与富集成矿密切相关;该类型矿床的发现使传统的"两楼一梯"成矿模式更新为"两楼一梯+地下室"的成矿模式,并对云南个旧深部找矿和接替资源补充具有重要的意义.
In this paper,tin-copper polymetallic deposit in western low of east part of Gejiu is studied through a systematic analysis of its geological setting,geological characteristics of the deposit,characteristics of alterations zoning,geochemical component of altered granite,and deep exploration experience.The results show that the deposit is a part of diverse magmatic hydrothermal mineralization system,which often occurs in the inner altered granite,especially the edge and transition facies.It is a high-temperature magmatic hydrothermal deposit combining with the post-gas-liquid mineralization by the decomposition and gasification of magma in early stage and the alteration of magma intrusion in later stage.The deposit has close relationship with wall-rock alteration,especially potash feldspathization,pyritization,fluoritization and tourmalinization.The main metallic elements of the deposit include Cu,Sn,W;the elements Ag,Mo,Bi,Cd,In,U are the comprehensive utilized elements.The discovery of this type of deposits has great significance for deep exploration and further resources exploration in Gejiu mining area.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
2011年第2期277-281,共5页
Earth Science-Journal of China University of Geosciences
基金
全国危机矿山接替资源找矿专项(No.200653058)
地质过程与矿产资源国家重点实验室科技部专项
关键词
蚀变花岗岩
锡铜多金属矿床
成矿特征
深部找矿
云南个旧
altered granite
tin-copper polymetallic deposit
metallogenic characteristics
deep ore exploration
Gejiu of Yunnan Province.
