内蒙古毕力赫大型金矿勘查突破过程及启示意义.pdfVIP

2009 8 28 4 Aug. , 2009 M INERAL DEPOSITS 28 ( 4) : 390~ 402 :0258-7106 (2009) 04-0390- 13 葛良胜, 卿 敏, 袁士松, 唐明国, 邢俊兵 ( , 065000) , , , , 3 , , Ò , , / 211 916 t, , , ; ; ; ; ; : P618. 51 :A Prospecting process of Bilihei large-sized gold deposit in Inner Mongolia and its revelatory significance GE LiangSheng, Q ING M in, YUAN ShiSong, TANG MingGuo and XING JunBing ( Gold Geological Institute of CAPF, Langfang 065000, Hebei, China) Abstracts T he Bilihei gold deposit in Inner Mongolia is a very small gold deposit w hose resource w as previously in a state of fearful crisis. In order to get rid of such a situation, the authors w ere invited to evaluate the resource po- tential and conduct resource prospecting. The early geological survey show s that the deposit is located in an im- portant ore-forming belt in the north margin of the North China plate. T he ore bodies are controlled by struc- tures of volcanic craters and different trends of faults, and the country rocks are mainly of the intermediate-acid volcanic series. M ineralization 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, w hich may convert into the porphyry type in depth. Nevertheless, no typical porphyry type ore bodies w ere discovered before this prospecting. On the basis of geological investigation of the exhaustive field and com- prehensive analysis of the resource potential, a scientific resource prospecting p