下雷-东平锰矿带矿床特征和成因探讨

发布时间：2018-02-08 23:14

本文关键词： 下雷-东平锰矿带锰矿类型矿床特征成因探讨　出处：《地质与勘探》2016年05期 　论文类型：期刊论文

【摘要】：下雷-东平锰矿带是我国重要的锰矿矿集区。在矿集区典型锰矿床的野外工作基础上,对含锰岩系和矿石开展了岩石学、岩石化学、微量元素地球化学分析研究,比较了同一锰矿带的下雷式、东平式两类锰矿床特征。结合前人区域构造资料,探讨了下雷式、东平式两类锰矿成因。研究认为下雷式锰矿形成于被动大陆边缘,热水作用参与了锰矿的形成;而东平式锰矿形成于被动大陆边缘向前陆盆地过渡带,成矿过程中火山活动强烈,推测东平锰矿的沉淀富集作用与海底火山喷发具有一定的相关性。
[Abstract]:The Xialei-Dongping manganese ore belt is an important manganese ore concentration area in China. Based on the field work of typical manganese ore deposits in the ore concentration area, the petrology, petrochemistry and trace element geochemistry of manganese bearing rock series and ore have been studied. The characteristics of the two types of manganese deposits in the same manganese ore belt are compared. The origin of the two types of manganese deposits of the lower thunder type and the Dongping type are discussed based on the previous regional tectonic data. It is considered that the lower thunder type manganese deposits were formed on the passive continental margin. The hydrothermal process takes part in the formation of manganese ore, while Dongping type manganese deposit is formed in the transitional zone of the forward continental basin on the passive continental margin, and the volcanic activity is strong during the metallogenic process. It is inferred that the precipitation enrichment of Dongping manganese deposit is related to the submarine volcanic eruption.
【作者单位】：鲁东大学;浙江农林大学;中国冶金地质总局;中国冶金地质总局广西地质勘查院;
【基金】：国家科技支撑计划课题(2011BAB04B10) 国家自然科学基金项目(41372097) 南京大学国家金属矿产开放实验室项目资助
【分类号】：P618.32

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