湖南奥陶纪天马山组中沉积型氧化锰矿的发现

在湖南常宁市茶潦村的天马山组下段地层中,首次发现有沉积氧化锰矿存在.矿区位于湘桂盆地南东边界,矿区含锰岩系由泥质岩及粉砂岩组成,矿体与围岩整合接触,该矿床沉积相属外陆棚、次深海陆缘斜坡相浊流沉积.断陷槽区域的离散拉张环境对锰成矿作用至关重要,茶潦凹陷带就发育于这种区域离散环境,且营造了相对缺氧的、滞流的安静环境.据此在湖南寻找同类型氧化锰矿的思路应顺层位找矿,顺含锰岩系找矿,并顺断陷槽找矿.

Deposition Type Oxidation Mn-mine in Ordovician Tianmashan of Hunan

In Changning Chaliao village of Tianmashan paragraph formation, we have first found the deposition oxidation of Mn-mine which is located in the southeast border of Hunan-Guangxi basin. The mine contains Mn rock mixed by mud mass rock and the powder sandstone, and orebody and rock integration are contacted with the deposit shelf and deposition phase outside. Deep sea in continental margin slope turbidite sediments. Rift channel in discrete extensional environment of this region is essential for manganese ore to be developed in this area. A discrete environment creates a relative lack of oxygen and quiet environment of viscous flow. To find its kind in Hunan bedding of manganese oxide ore prospecting is to look along the rift slot for CIS manganese-beating rock series in prospecting and prospecting.