云南北衙特大型金矿找矿突破:商业性勘查快速评价的范例  

A Prospecting Breakthrough of the Beiya Superlarge Gold Deposit in Yunnan Province:A Successful Example of Rapid Evaluation in Commercial Exploration

作　　者：杨夕辉[1,2] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]云南华西矿产资源有限公司,昆明650214

出　　处：《地质与勘探》2010年第6期995-1000,共6页Geology and Exploration

摘　　要：北衙金矿找矿突破是一个曲折的过程,50年代勘查铅锌铁矿,70年代发现了金矿,以"红土型"金矿勘查为主,90年代在分析研究前人勘查和科研成果的基础上,对矿床的成因类型认识获得突破:金多金属矿床受岩体、构造、地层三位一体控制,成矿物质主要来源于深部地幔物质,主成矿期为与岩体侵位的喜马拉雅山期,成因类型为斑岩-热液型金矿床。再用岩体+构造+综合异常圈定万硐山为找矿靶区,采用高精磁测定位矿体,钻孔验证发现了斑岩型金矿体,并成功地用商业性地质勘查对金矿床进行了快速勘查评价。The prospecting breakthrough of the Beiya gold deposit is a tortuous process.In the 1950s,surveys began for lead,zinc and iron ores.Then in the 1970s,gold deposits were found,dominated by the red-soil type.In the 1990s,understanding of the genetic type of deposits has achieved breakthrough based on analysis of previous exploration and scientific research.It is recognized that the Au polymetallic ore deposit is controlled by a trinity of rock mass,structure and strata.The ore-forming materials mainly originate from deep mantle,and the main mineralization stage is the Himalayan period with a porphyry-thermal genetic type.Utilizing the integrated method of using rock mass,structure and multiple anomalies,the Wangtong Shan Mountains was determined to be the target for gold prospecting.Then high-accuracy geomagnetic measurements were adopted to locate ore bodies.Finally,the porphyry-type gold deposit was found by drilling,and evaluation of resource was carried out rapidly for by the commercial geological survey.

关 键 词：商业性勘查 成矿模式 北衙金矿 找矿突破 

分 类 号：P61[天文地球—矿床学] P62[天文地球—地质学]