论文部分内容阅读
震旦纪锰矿层在桃江安化内地普遍出露,含锰层到处可见,而构成具有工业开采的矿体不多。但原生碳酸锰近地表部分,受风化而形成的次生氧化物分布较广,长度达数十公里,但不连续,深度一般数米到十几米。原生含锰层受后期构造影响,在它的顶底板或矿层中,普遍受到矽化和石英脉的充填或胶结,增加了硅质,相应贫化了锰的含量,改变了矿石的成分,失掉了开采利用的工业价值。
The Sinian manganese ore layer is commonly exposed in the interior of the Taojiang Anhua area, and the manganese-bearing layer can be seen everywhere. However, there are not many ore bodies that constitute industrial mining. However, the primary surface of some manganese carbonate, formed by the weathering of secondary oxides are widely distributed, up to tens of kilometers in length, but not continuous, the general depth of several meters to ten meters. The primary manganese-bearing layer is affected by the later tectonics and is generally filled or cemented by silicification and quartz veins in its top floor or seam, increasing the siliceous content, depleting the manganese content correspondingly, altering the composition of the ore and losing Industrial value of exploitation.