内蒙古额济纳旗千条沟铜多金属矿化区成矿地质特征及找矿方向

Geological features and prospecting directions of QianTiaoGou copper polymetallic mineralized area in Ejin Banner,Inner Mongolia

千条沟铜多金属矿区位于内蒙古自治区额济纳旗千条沟北约6公里,行政区划隶属阿拉善盟额济纳旗所在地达来呼布镇。南东距额济纳旗政府所在地约120公里。工区位于北山山系的东北边缘,六陀山横担在图幅中部。大地构造位置属天山—阴山纬向构造体系的中段。工区地层主要以奥陶系粉砂岩和二叠系板岩为主,岩浆岩以闪长岩、斜长花岗岩、花岗斑岩、花岗岩为主,区内构造受近东西向冲断深大断裂和区域六驼山复背斜影响,主要为次级羽状断裂和张性断裂,多被后期岩浆侵入岩及后期石英脉充填,在工区南西部斜长花岗岩区,发现1号矿脉、2号矿脉、3号矿脉群、4号矿脉群,其地表矿化体均为石英脉,具较强孔雀石化,且肉眼可见铅矾,矿脉走向以南西-北东为主。总的分析,工区南西部为重点找矿区域,物探、化探、地质综合分析的结果都比较吻合,褶皱和断裂较发育,热液活动明显,矿脉品位较高,具有找到铜多金属矿床的成矿条件。

The copper polymetallic deposit of QianTiaoGou in the Inner Mongolia Autonomous Region is built about 6km north QianTiaoGou ,Ejinaqi and about 80km northwest state, administrative division under the seat of Alashan Ejinaqi to call Dalaihubu town. South east Ejinaqi working seat of government about 120 km. Work area at the northeast edge of North Mountain Mountains, LiuTuoShan is in the middle of map.The tectonic position is in the middle of Tianshan-Yinshan latitudinal structural system. The strata of work area is mainly Ordovician siltstone and Permian slate,To-diorite , plagioclase granite, granite-porphyry, granite is the mainly kind of magmatic rock. Regional tectonic thrust by the East-West deep fault and the regional impact of LiuTuoshan Mountain anticlinorium, primary to secondary faults and tensional fractures pinnate, were filling by the late and post-magmatic intrusive rocks of quartz veins. In the plagioclase granite area of southwest work area , found minera~ vein 1, mineral vein 2 , mineral veins of group 3,mineral veins of group 4. The surface mineralization are quartz veins, with strong malachite and lead. Mineralized quartz veins to the Southwest-North East based. The overall analysis, work area focused on the south western and central regions prospecting, geophysical, geochemical, geological comprehensive analysis of the results are more consistent. Fold and fault had be found, hydrothermal activity was stronger, veins were obviously higher grade, have find copper polymetallic deposit metallogenic conditions.