江西省众埠街热水喷流沉积型锰铅锌矿的成矿机制研究

过去针对江西众埠街锰铅锌矿的成因研究成果均停留在对矿床地质特征和矿石质量等要素的研究层面,缺少对矿床元素及组分的地球化学特征的研究,对国内外类似典型矿床的资料搜集和对比研究也基本未涉及等,为更有效地实施地质项目,对该矿开展了成矿规律及外围成矿预测研究。该矿为一探明的大型锰铅锌矿床,矿床呈现上锰下铅锌的双层结构,为同生锰矿和后生铅锌矿的共生复合矿床。通过总结矿床地质特征,分析和研究矿床元素地球化学特征,并与同类型典型热水喷流沉积型矿床相类比,探讨矿床成矿物质和热液来源、成矿时代和成矿机理,认为矿床为与海底火山喷流有关的铅锌矿和沉积型锰矿的共生复合矿床。

Study on Metallogenic Mechanism of Hot Water Jet Sedimentary Manganese-Lead-Zinc Deposit in Zhongbujie,Jiangxi Province

Overview of the past research results on the genesis of the deposit has remained at the level of studying the geological characteristics and ore quality of the deposit,lacking the research on the geochemical characteristics of the elements and components of the deposit,and the data collection and comparative study of similar typical deposits at home and abroad have not been involved.In order to carry out the geological project more effectively,the metallogenic law and peripheral metallogenic prediction have been carried out..The Zhongbujie manganese-lead-zinc deposit in Jiangxi Province is a large-scale proved manganese-lead-zinc deposit.The deposit has a double-layer structure of upper manganese and lower lead-zinc.It is a symbiotic composite deposit of syngenetic manganese ore and epigenetic lead-zinc ore.By summarizing the geological characteristics of the deposit,analyzing and studying the element geochemical characteristics of the deposit,and comparing with the typical hydrothermal exhalation sedimentary deposits of the same type,this paper discusses the ore-forming material and hydrothermal source,metallogenic age and metallogenic mechanism of the deposit.It is considered that the deposit is a magmatic hydrothermal filling metasomatic lead-zinc deposit related to submarine volcanic exhalation.