山东烟台辽上金矿床成矿规律及远景评价研究
投稿时间:2018-09-19  修订日期:2018-09-19  点此下载全文
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作者单位E-mail
李鹏程 山东省第三地质矿产勘查院 chris_zhang@aliyun.com 
中文摘要:胶东牧牛山成矿区是胶东地区重要的金成矿区域,烟台辽上金矿床即位于该成矿区中部。本区地质构造背景复杂,成矿条件优越。本文通过对矿区深部和外围开展矿床学研究工作,试图查明该金矿床的成矿规律及进行初步的远景评价研究,为矿床深部及外围的进一步勘探工作提供科学依据。本次勘探研究工作在矿区范围内发现金矿体56个,其中工业矿体42个,低品位矿体14个,以Ⅲ-9矿体规模最大,单矿体金资源量占本次探获资源总量的44.4%。从近矿围岩与总结的成矿模式看,荆山群大理岩、含石墨斜长片麻岩、斜长角闪岩以及燕山期中基型脉岩,与成矿关系密切,可做为找矿标志。另外,硅化、黄铁矿化、绢英岩化等蚀变标志及金地球化学异常也是很有效的找矿标志。本次勘查工作共发现五个规模较大金矿体,资源量规模已达特大型,但是沿倾向均未封闭,因此,矿区深部及外围的找矿前景良好。
中文关键词:牧牛山成矿区  胶东  辽上金矿床  成矿规律  远景评价
 
Metallogenic Regularity and Prospect Evaluation of the Liaoshang Gold Deposit in Yantai, Shandong
Abstract:Muniushan metallogenic area is an important gold metallogenic area in Jiaodong area. The Liaoshang gold deposit in Yantai is located in the central part of the metallogenic area. The geological structure of this area is complicated and the metallogenic conditions are excellent. This paper tries to find out the metallogenic regularity of the gold deposit and carry out preliminary prospective evaluation and research by carrying out ore deposit research in the depth and periphery of the deposit, so as to provide scientific basis for further exploration in the depth and periphery of the deposit. Fifty-six gold ore bodies have been found in the mining area, including 42 industrial ore bodies and 14 low-grade ore bodies. Among them, the scale of the Ⅲ-9 orebody is the largest. The amount of gold resources in single orebody accounts for 44.4% of the total exploration resources. According to the wall rocks and metallogenic model, the marble, graphite-bearing plagioclase gneiss, amphibolite and Yanshanian medium-basic dike rocks of the Jingshan Group are closely related to mineralization and can be used as prospecting indicators. In addition, alteration marks such as silicification, pyritization, sericitization and gold geochemical anomalies are also very effective prospecting marks. Five large-scale gold deposits have been found in this exploration work, and the resource scale has reached a super-large scale, but along the trend are not closed, so the prospecting potential in deep and peripheral areas are good.
keywords:Muniushanhan metallogenic area  Jiaodong area  Liaoshang gold deposit  Metallogenic regularity  Prospective evaluation
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