龙田沟锰矿成矿地质特征及成矿潜力研究

Study on Metallogenic Geological Characteristics and Metallogenic Potential of Longtiangou Man⁃ganese Deposit

河北省灵寿县龙田沟锰矿对Mn2、Mn3、Mn5矿化体仅有稀疏的工作揭露,矿化体走向及延伸不清。本次重点对Mn2、Mn3、Mn5矿化体成矿地质条件进行普查,同时对该地区锰矿成矿潜力进行评价。龙田沟锰矿共有4条矿化体,赋存于古元古代林山组和青同组中,呈似层状、透镜状、豆角状产出,与围岩产状基本一致。Mn1、Mn2、Mn3矿化体规模小,品位高;Mn5矿化带规模大,品位低。分析认为该矿床规模较小、成矿潜力不佳,同时认为该类型锰矿床找矿前景不佳。

The Longtiangou manganese deposit in Lingshou County,Hebei Province has only sparse work on Mn2,Mn3 and Mn5 mineralized bodies,and the direction and depth of the mineralized bodies are unclear.This paper focuses on the geological conditions of Mn2,Mn3 and Mn5 mineralization bodies,and evaluates the metallogenic potential of manganese deposits in this area.There are four mineralized bodies in the Longtiangou manganese deposit,which occur in the Paleoproterozoic Linshan Formation and the Qing⁃tong Formation.They are layered,lenticular,and angular,which are basically consistent with the occur⁃rence of surrounding rocks.Mn1,Mn2,Mn3 mineralization bodies have small scale and high grade.The Mn5 mineralization zone is large in scale and low in grade.The analysis shows that the deposit is small and the metallogenic potential is not good.At the same time,it is considered that the prospecting prospect of this type of manganese deposit is not good.