贵州省遵义播州区和尚场锰矿床地质特征

Geological characteristics of Heshangchang manganese deposit in Bozhou District of Zunyi,Guizhou

遵义锰矿是贵州首次发现具有工业价值的锰矿床,其中和尚场锰矿是最早发现的锰矿床。利用和尚场锰矿勘查开发成果,详细总结了矿床地质、成矿地质体和矿石特征,锰矿体呈层状、似层状产于二叠纪茅口组第三段含锰岩系,矿石矿物主要为菱锰矿,自然类型为碳酸锰矿石,工业类型为贫锰矿、富锰矿。认为矿床位于二叠纪遵义次级裂谷盆地(Ⅱ级)中团溪—尚稽(Ⅲ级)地堑盆地的和尚场Ⅳ级地堑成锰盆地中,区内发现了1个尚未圈边的喷溢沉积中心,富锰矿体分布在成矿系统中心相。矿床类型划为“内生外成气液喷溢沉积型锰矿床”。

Zunyi manganese deposit is firstly discovered in Guizhou with industrial value,and Heshangchang manganese deposit is one of the orebodies to be found out early in the region.Based on the mineral exploration and development result of Shangchang manganese deposit,this paper has summarized the deposit characteristics of geology,metallogenic geological body and ore feature in detail.The manganese orebody is layered and similar-to-layered manganese-bearing rock series in the third segment of Maokou Formation of Permian system.The ore mineral is mainly manganite,the natural type is manganese carbonate ore,and the industrial type is poor and rich manganese ores.It is considered that the deposit is located in the Heshangchang graben manganese basin(gradeⅣ)of the middle Tuanxi-Shangji(gradeⅢ)graben basin in the secondary rifting basin(gradeⅡ)of Zunyi in Permian.There is found out for an effusion sedimentary center with unclosed edge in the region.The rich manganese orebody is located in the center phase of the metallogenic system.The deposit type is classified as"endogenous and exogenous gas-liquid effusion sedimentary manganese deposit".