新疆明锡山地区锡矿成矿条件分析

Analysis on Tin Metallogenic Conditions in Xishan Area in Xinjiang Uygur Autonomous Region

星星峡地区是中国西部重要的成矿区带,具备极佳的成矿条件。其中明锡山矿区属星星峡金多金属成矿带,矿区内锡铜矿化主要与海西中晚期岩浆热液活动有关,锡铜矿化均赋存在绢英岩化蚀变岩内,受区域断裂旁侧发育的NE向张扭性次级断裂控制,并从岩浆岩、构造、热液蚀变、地球化学等方面探讨了找矿标志。

Xingxingxia area is an important metallogenic belt in western China with good ore-forming con-ditions.Mingxishan mining area belongs to Xingxingxia gold and polymetallic metallogenic belt.Tin and copper mineralization in mining area have close relation with middle and late Hercynian magmatic hydro-thermal activity.Bothe tin copper mineralization occurredc in phyllic altered rocks and are controlled by tension-torsional secondary fault with the trend of NE developed at the side of regional fault.From the aspects of magmatic rocks,tectonic,hydrothermal alteration,geochemical conditions,prospecting crite-rias have been discussed in this paper.