湖南湘潭九潭冲-楠木冲地区锰矿地质特征及找矿潜力分析

Geological Characteristics and Prospecting Potential Analysis of Manganese Deposits in Jiutanchong-Nanmuchong Area,Xiangtan,Hunan Province

九潭冲-楠木冲地区位于湘潭成锰沉积盆地东南部,属扬子陆块东南缘锰矿成矿带。区内发现有九潭冲、楠木冲2个锰矿床及隐山锰矿点,属海相沉积型锰矿床。研究表明锰矿层赋存于南华系中统大塘坡组第一段炭质页岩中,呈层状、似层状或透镜状产出,原生矿石类型为碳酸锰矿石;锰矿的形成及分布主要受古构造、岩相古地理、地层及岩性控制;九潭冲矿区、楠木冲矿区已知锰矿体的北东延深方向,以及两矿区之间的工作空白区,找矿潜力巨大。

The Jiutanchong-Nanmuchong area is located in the southeast of the Xiangtan manganese-forming basin,belonging to the manganese ore metallogenic belt on the southeastern margin of the Yangtze landmass.There are 2 manganese deposits of Jiutanchong,Nanmuchong and Yinshan manganese deposit,which are found in the area,and it belong to marine sedimentary manganese deposits.The research shows that the manganese deposits exist in the first member of the Datangpo formation in the middle series of the Nanhua System,and it occurs in a layered,quasi-layered or lenticular texture.The primary ore type is manganese carbonate ore;The formation and distribution of manganese deposits are mainly controlled by paleostructure,lithofacies paleogeography,stratigraphy and lithology;The northeast extension direction of the known manganese ore bodies in the Jiutanchong and Nanmuchong mining areas,as well as the work blank area between the 2 mining areas,which have great prospecting potential.