新疆精河县库鲁铁列克提一带地质特征及找矿方向

Geological Characteristics and Prospecting Direction of Kulutielieketi Area in Jinghe County,Xinjiang

为了更好地研究和分析库鲁铁列克提一带金成矿特点及产出特点,研究区以破碎蚀变岩型金矿、斑岩型-矽卡岩型多金属矿为主攻目标,运用大比例尺地质测量、面积性化探、物化探剖面和槽探等方法手段圈定找矿靶区。研究结果表明:在该区发现了4条蚀变带,圈出含金矿化体5条,金品位(0.1~0.6)×10-6,地表含金矿化体长100~320 m,厚0.8~7.1 m;矿化体呈脉状、似层状产出,主要赋存于青白口系凯尔塔斯群下部褐铁矿化、碳酸盐化微晶灰岩中,地层附近常见有脉岩穿插,以细脉状的石英碳酸盐岩为主,北西向的断裂构造是主要的控矿构造,具有卡林型金矿的典型特征,即含矿围岩为碳酸盐及碎屑岩,且具有品位低、规模较大的特征,含矿元素组合主要为Au-As-Cu-W-Mo-Sb。

In order to better study and analyze the characteristics of gold mineralization and its output in the Kulutielieketi area,the fractured altered rock type gold deposit and porphyry-skarn type polymetallic deposit are taken as the main targets in the study area,and the prospecting target areas are delineated by large-scale geological survey,areal geochemical exploration,geophysical and geochemical exploration section and trough exploration.The results show that four alteration zones were found in this area,and five gold bodies with gold grade(0.1~0.6)×10-6 were ringed.The length of surface gold bodies was 100~320 m and the thickness was 0.8~7.1 m.The mineralized bodies are produced in vein and stratiform form,and mainly occur in the limonized and carbonated microcrystalline limestone in the lower part of Keltasi Group of Qingbaikou System.Vein rocks are commonly interspersed near the strata,and quartz carbonate rocks are the main ore-controlling structure.The NW faulted structure is the main ore-controlling structure,which has the typical characteristics of Carlin-type gold deposits,that is,the ore-bearing surrounding rocks are carbonate and clastic rocks.The ore-bearing element combination is mainly Au-As-Cu-W-Mo-Sb with low grade and large scale.