矿床地质2009，Vol.28Issue(4)：390-402,13.
内蒙古毕力赫大型金矿勘查突破过程及启示意义
Prospecting process of Bilihei large-sized gold deposit in Inner Mongolia and its revelatory significance
摘要
Abstract
The Bilihei gold deposit in Inner Mongolia is a very small gold deposit whose resource was previously in a state of fearful crisis. In order to get rid of such a situation, the authors were invited to evaluate the resource potential and conduct resource prospecting. The early geological survey shows that the deposit is located in an important ore-forming belt in the north margin of the North China plate. The ore bodies are controlled by structures of volcanic craters and different trends of faults, and the country rocks are mainly of the intermediate-acid volcanic series. Mineralization was related to the concealed granodiorite porphyry. Detailed observations of the exploratory and mining tunnels revealed that mineralization at surface and shallow places is of the epithermal type, which may convert into the porphyry type in depth. Nevertheless, no typical porphyry type ore bodies were discovered before this prospecting. On the basis of geological investigation of the exhaustive field and comprehensive analysis of the resource potential, a scientific resource prospecting plan was put forward and performed, with the porphyry type ore body in depth being the main exploratory target. Through more than three years' research and prospecting work, a new survey area named No. 2 mineralization zone was detected on the periphery of the formerly-discovered ore district. It was in the No. 2 mineralization zone that a large-sized concealed high-grade gold ore body was found, with more than 21000 kg gold resource being so far proved. It is the first large porphyry Au deposit ever discovered in middle-east Inner Mongolia. The authors have come to the conclusion from their experience that the key factors to successful prospecting are detailed basic geological work, scientific resource potential evaluation and pertinent prospecting thinking.关键词
地质学/金矿床/大型/勘查过程/毕力赫/内蒙古Key words
geology/ gold deposit/ large-sized deposit/ prospecting process/ Bilihei/ Inner Mongolia分类
天文与地球科学引用本文复制引用
葛良胜,卿敏,袁士松,唐明国,邢俊兵..内蒙古毕力赫大型金矿勘查突破过程及启示意义[J].矿床地质,2009,28(4):390-402,13.基金项目
本文得到全国危机矿山接替资源勘查项目(编号:200715011)和第二批全国危机矿山典型矿床及成矿规律总结研究项目(编号:20089925)的资助 （编号:200715011）
