江西黄连坑锰矿成矿特征及成因探讨

Ore-forming Characteristics and Genesis Study of Huangliankeng Manganese Deposit in Jiangxi

江西省武宁县境内分布了众多的小型铁、锰矿床(点),前人称之为“武宁式”铁矿。通过对黄连坑锰矿区地层的含矿性、控矿构造及容矿构造、矿体特征、矿石类型等地质特征的论述,认为震旦系地层是“初始矿源层”,滑脱构造对成矿物质起迁移、富集及容矿作用。并与萍—乐断陷盆地内的沉积加热液叠改型乐华锰矿床进行了对比分析,二者在矿体规模、矿石类型、锰品位等方面存在显著差别,应属不同成因类型的矿床。初步认为黄连坑锰矿床属构造控矿、风化淋滤成因。

Numerous small-size iron and manganese deposits （occurrences） distribute within the boundary of Wuning County, Jiangxi Province, which is called ＂Wuning type＂ iron deposit by predecessors. Through the analysis of geological characters in Huanglianken manganese ore district, such as ore potentiality, ore controlling structures, ore depositing structures, orebody characteristics, ore type and so on, the author concluded that Sinian stratum is the ＂Primary source bed＂, detachment structure is the migrating channel of ore-forming materials,favorable concentration and hosting place. Compared with Lehua manganese deposit in Pingxiang-Leping faulted basin, which is a sedimentary hydrothermal superimposed type, both orebodies are different obviously in orebody scale, ore type and tenor of manganese etc. , it should be a deposit with different genetic type. It is suggested that the formation of Huanglianken manganese deposit belonged to a deposit which is controlled by structure and is weathering leaching genesis.