CAJ | 학술논문

内蒙古毕力赫金矿原为一资源严重危机的小矿山.为缓解资源危机,维持矿山可持续发展,笔者等应邀对该矿床进行了资源潜力评价,并开展接替资源勘查工作.在对该矿床进行详实的野外地质调查和资源潜力分析的基础上,确定了针对矿山地质工作程度并结合矿床具体特点、采用以现有资料综合分析为基础、以针对性的地质科研引路、以有效的勘查方法技术组合配套使用为手段、适时设计验证工程、分期分阶段有重点地加以实施的找矿勘查思路.通过3年多的研究与勘查,实现了找矿的重大突破,在原矿区外围新发现了Ⅱ号金矿带.通过系统勘探,发现大型高品位隐伏斑岩型金矿体,提交新增金资源/储量21.916 t,使一个名不见经传的小矿一跃而成为大型金矿床.经验表明,要实现危机矿山的找矿突破,扎实的基础地质工作、科学的资源潜力评价和有针对性的找矿勘查思路是成功的关键.
내몽고필력혁금광원위일자원엄중위궤적소광산.위완해자원위궤,유지광산가지속발전,필자등응요대해광상진행료자원잠력평개,병개전접체자원감사공작.재대해광상진행상실적야외지질조사화자원잠력분석적기출상,학정료침대광산지질공작정도병결합광상구체특점、채용이현유자료종합분석위기출、이침대성적지질과연인로、이유효적감사방법기술조합배투사용위수단、괄시설계험증공정、분기분계단유중점지가이실시적조광감사사로.통과3년다적연구여감사,실현료조광적중대돌파,재원광구외위신발현료Ⅱ호금광대.통과계통감탐,발현대형고품위은복반암형금광체,제교신증금자원/저량21.916 t,사일개명불견경전적소광일약이성위대형금광상.경험표명,요실현위궤광산적조광돌파,찰실적기출지질공작、과학적자원잠력평개화유침대성적조광감사사로시성공적관건.
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.