我国钼矿床研究现状与展望

Research Status and Prospects of the Molybdenum Deposits in China

为深入剖析我国钼资源分布特征与钼矿床研究现状,对我国钼资源的国际地位、矿床分布特征、矿床类型、成矿温度、成矿时代进行了系统分析,结果表明:1我国钼资源量和产量均居全球首位,但并未成为钼业强国;2钼矿床主要成因类型为斑岩型、矽卡岩型和脉型,斑岩型和矽卡岩型钼矿属中—高温成矿,脉型钼矿属中—低温成矿;3钼矿床成矿年龄相对较晚,主要集中于燕山期—喜马拉雅期。在上述分析的基础上,综合分析了有关钼矿资源成矿物质来源、成矿流体来源等方面的研究成果,得出以下结论:1我国钼矿的成矿物质来源复杂,既有壳源、幔源,也有壳幔混源;2成矿流体来源以岩浆热液为主,大气降水在其中占有十分重要的地位;3钼同位素特征是未来示踪成矿物质来源的有效手段;4鉴于利用流体包裹体氢氧同位素研究成矿流体来源存在许多问题,认为有必要运用多种示踪方法进行综合研究,相互补充和验证,是准确推断成矿流体来源的最佳途径。

Molybdenum is a rare metal mineral resources of strategic importance in the world. In order to analyze the molybdenum resources distribution characteristics and molybdenum deposit research status,the international status,ore deposit distribution characteristics,ore deposit types,ore-forming tempreature and metallogenic epoch of the molybdenum resources in China are analyzed in depth,the results show that： 1 the molybdenum resources and production are both ranking first in the world,but far from being a powerhouse of molybdenum resources; 2the porphyry type,skarn type and vein type are the main genetic types of molybdenum deposit,the porphyry type and skarn type molybdenum deposits are belongs to middle-high temperature deposits,the vein type molybdenum deposit are analyzed to middle-low temperature deposit; 3the metallogenic age of molybdenum deposit is relatively late,it focus on Yanshannian-Himalayan. Based on the above analysis results,the existed research results of ore-forming materal source and ore-forming fluid souces of molybdenum deposit are researched in depth,the following conclusions are concluded： 1the ore-forming material source of molybdenum deposit in our country is complex,they are shell source,mantle source and crust-mantle mixed source; 2the magmatic hydrothermal is the main source of ore-forming fluid,the atmospheric precipitation occupies a very important position; 3the current research results of the ore-forming material source of molybdenum deposit in our country is inaccurate,the molybdenum isotopic characteristics will be an effective means of tracing ore-forming material source; 4 there are many problems are existed in the process of analyzing ore-forming fluid source by using hydrogen and oxygen isotope,so,it is necessary to adopt a varity of integrated tracing methods to analyze the ore-forming materal source of molybdenum deposit comprehensively to realize the goal of mutal complement and authentication,therefore,it is the best method to analyze the ore-forming fluids of molybdenum deposit.