论文摘要
The Hadamengou gold field is located in the western section of northern margin of North China Craton. Since it was discovered in 1986, more than 100 tons of gold resources reserves have been proved. The outcropping strata in this area are mainly high-grade metamorphic rocks of Wulashan Group, which are host rocks of this gold field.The whole gold deposit is mainly controlled by two deep faults, Wulatqianqi-Huhhot and Linhe-Jining. The distribution of magma and metal deposits in the area is also affected by them. Their secondary structures are EW-trending, NE-trending and NNE-trending faults, which are the important ore-hosting structures of this deposit. A large number of Hercynian, Indosinian and Yanshanian intermediateacid intrusive rocks and intermediate-basic-acid dikes can be seen in the area. The larger ones are the Dahuabei granite body in the west of the mining area and the Shadegai rock body in the north. The main dikes are granite pegmatite dikes, granite porphyry dikesand diabase dikes. Hadamengou gold deposit can be divided into nine vein swarms according to its spatial occurrence location（No.1, No.13, No.24, No.25, No.55, No.100, No.113, No.304 and No.313）（Fig. 1）. Each vein swarm contains several gold veins with the lengths varying from 50 to 2760 m and the thicknesses varying from 0.50 to19.58 m. The vein strikes nearly east-west, inclines southward and dips from 60 ° to 70 °, a few veins strike northwest. The mineralization types are divided into quartz-potassium feldspar vein type, quartz vein type, potassium feldspar altered rock type and pyritized phyllite rock type.In recent years, many methods and means have been used in deep exploration in mining areas, and good prospecting results have been achieved. The technical combination of deep prospecting methods for Hadamengou gold deposit including:（1） Geology, Geophysics and Geochemistry Comprehensive Prediction Technology for Deep prospecting. Gold veins are controlled by structures,and the veins themselves are gold-bearing sulphide quartz veins and gold-bearing sulphide altered rocks.According to these characteristics, on the one hand, using geophysical methods of CSAMT, MT, SIP and other integrated geological profiles, inversion of ore-controlling structures by CSAMT and MT. Deep extension of vein is determined by SIP. On the other hand, The technique of structural geochemical superimposed halo is used to collect samples of typical veins in stages and promote deep prediction. The method of prospecting mineralogy is also used to carry out metallogenic prediction, and good prediction results have been achieved, also. Therefore, in order to carry out metallogenic prediction and prospecting in Hadamengou gold field, it is suggested to adopt comprehensive geophysical and geochemical methods and techniques. The main assemblages are geology + CSAMT, MT, SIP + structural superimposed halo + drilling verification;（2） Three-dimensional geological modeling and Three-dimensional prospectin
论文目录
文章来源
类型: 国际会议
作者: YANG Biao,HOU Wanrong,LIU Zhijie,MENG Jianjun
来源: 第九届世界华人地质科学研讨会 2019-06-01
年度: 2019
分类: 基础科学,工程科技Ⅰ辑
专业: 地质学,矿业工程
单位: Hohhot Natural Resources Comprehensive Investigation Center of China Geological Survey
分类号: P618.51
DOI: 10.26914/c.cnkihy.2019.028522
页码: 430-431
总页数: 2
文件大小: 119k
下载量: 1