四川省壤塘县金木达金矿床地质特征及开采技术条件研究

The Study on the Geological Characteristics and the Mining Technical Conditions of Jinmuda Gold Mine, Rangtang County, Sichuan Province

矿区的金矿化带赋存于三叠系上统新都桥组第二段(T_3x^2)浊积岩-绢云母粉砂质板岩和沿层间断裂充填的燕山早期石英闪长玢岩(δμ)之内外接触带中。矿区已圈出两条金矿体,编号Ⅰ、Ⅱ,具一定的工业利用价值。矿石自然类型以金矿的含矿岩石不同划分为板岩型矿石和玢岩型矿石。该矿床属于中高温度范围,矿床工业类型属浅层中高温度微细浸染型金矿床。矿区水文地质、工程地质条件简单,自然环境相对稳定,开采技术条件基本适宜。

The gold mineralization zone in the mining area occurs in the inner and outer contact zone of the second member ( T3x2 ) turbidite - sericite silty slate of the upper Triassic xinduqiao formation and the early Shi Ying diorite porphyrite (δμ) filled along the interlayer fracture. There are two gold ore bodies in the mining area. There are I and Ⅱ. They have certain industrial value. The natural types of ores are divided into slate type ores and porphyrite type ores according to the different ore-bearing rocks of gold ores. The deposit belongs to medium and high temperature range. The industrial type of the deposit belongs to shallow medium and high temperature micro - disseminated gold deposit. The hydrogeological and engineering geological conditions of the mining area are simple. The natural environment is relatively stable. The mining technical conditions are basically suitable.