华北地区钼矿资源特征及成矿规律研究

研究目的]钼(Mo)作为战略性矿产资源,查明华北地区钼矿资源,总结成矿规律,提出找矿方向,对研究区钼矿勘查部署具有重要意义.研究方法]本文以研究区98处钼矿床(点)资料为基础,通过对钼矿资源禀赋、成矿特征、预测类型的梳理,系统剖析与总结对研究区钼矿床成矿时空规律、物质来源、控矿要素等,进而分析资源潜力,提出找矿方向...

Resources characteristics of molybdenum deposits and their regional metallogeny regularity in North China

This paper is the result of mineral exploration engineering.Objective] Molybdenum (Mo) is a strategic mineral resource. It is of great significance to identify molybdenum ore resources in North China, summarize the metallogenic laws, and put forward the prospecting direction, which is of great significance for the exploration and deployment of molybdenum ore in the study area.Methods] Based on the data of 98 molybdenum deposits, the authors systematically analyzed and summarized the metallogenic epoch regularities, spatial regularities, material sources and orecontrolling factors in the study area through combing the resources endowment, metallogenic characteristics and prediction types of molybdenum deposits, then analyzed the resource potential and put forward the prospecting direction.Results]Molybdenum deposits in North China could be divided into four metallogenic types and four mineral prediction types. The metallogenic regularities of molybdenum deposits had been summarized and the prospecting direction is proposed.Conclusions]We thought the metallogenic age mainly concentrated in the Paleoproterozoic, the Permian-Triassic and Jurassic-Cretaceous, and the later was the major metallogenic epoch. The molybdenum deposits mainly produced in Paleoproterozoic Henan-Shanxi continental margin rift zone, late Paleozoic-early Mesozoic continental margin active zone in the south and north of North China block and the late Mesozoic magmatic arc, which the main metallogenic types were porphyry type and skarn type. The ore-forming materials were mainly come from crust-source or crust-mantle mixed source, and the ore-forming fluids were dominated by magmatic water, which were mixed with atmospheric water in the late stage. We pointed out three the most important areas as superior ore-forming conditions and great ore-prospecting potential like Pingquan, Hebei Province-Chifeng-Liangcheng in Inner Mongolia, the western segment of the northern margin of the North China block and Ruyang-Songxian-Luanchuan area in east Qinling-Dabie belt and Heiyingshan-Yagan area.Highlights: Theauthers systematically analyzed the molybdenum resource endowment in North China, summarized the epoch and spatial regularities of molybdenum deposits, the source of metallogenic materials and ore-controlling factors, put forward prospecting direction, which provides technical and data support for the exploration and deployment of geological molybdenum resources in North China.