新疆阿勒泰地区多拉纳勒铜矿地质特征与找矿预测

THE GEOLOGICAL CHARACTERISTICS AND MINERALIZATION FORECAST OF DUOLANALE CU DEPOSIT IN ALTAY,XINJIANG

阿舍勒块状硫化物矿床的发现揭示了阿舍勒-冲乎尔盆地有色金属找矿的巨大潜力.多拉纳勒铜矿与阿舍勒铜矿均位于玛尔卡库里剪切带北,出露地层为下泥盆统阿舍勒组火山岩-火山碎屑岩建造,海西晚期哈巴河岩体侵入至阿舍勒组,接触带上发育矽卡岩化、高岭土化、硅化、黄铁矿化、孔雀石化.TEM测深工作显示矿区存在3处中-低阻异常带,异常沿构造线方向展布与地表矿化体出露部位相吻合,推测为矿致异常.综合地质、物探特征,认为多拉纳勒地区深部找矿前景较好.

The discovery of the Ashele massive sulfide deposit implies the great potential for exploration of nonferrous metals deposit in Ashele-Chonghur basin..The Duolanale Cu deposit is located in north of Maerkaku big fault, as well as Ashele Cu deposit. The stratums contain volcanic-volcaniclastic rocks formation of lower Devonian Ashele group. In late Hercynian, the Habahe pluton were intruded in Ashele group. In the contact zone is consisting of skamization, kaolinization, silicification, pyritization, malachitization.There are three medium-low receptivity abnormity with the work of Transient Electromagnetic Method （TEM）, The anomaly area distribute along the tectonic line and is consistent with the ore body on the ground. So we inference those are anomalies related to mineralization. We consider that the Duolanale Cu deposit have a good prospecting potential in deep through comprehensive analysis of the geological and geophysical characteristics.