新疆伊宁县塔吾尔别克金矿区资源潜力分析及找矿靶区预测

新疆塔吾尔别克金矿床位于西天山吐拉苏金-多金属矿集区,北距阿希金矿仅2.5km;金矿产于下石炭统大哈拉军山组上部的安山质熔岩和火山碎屑岩中,金矿化分别产于5条构造蚀变带内,宏观上受NW向构造破碎带的控制,同时还受到爆破角砾岩、隐爆角砾岩和次火山岩相斑岩体的联合制约;在金矿形成过程中,与早石炭世火山活动有关的地层、构造(火山机构和断裂构造)、次火山相斑岩和围岩蚀变对成矿具有程度不同的控制作用。文章认为,在进一步的找矿工作中,需要从找矿的广度和深度两方面拓展找矿范围,总结多类型(浅成低温热液型、斑岩型和角砾岩型)金矿床的复合成矿规律,探索矿体深部由金向铜(多金属)的矿化分带规律,深入挖掘矿床的成矿潜力;根据矿区成矿潜力的分析结果,预测了7处可供进一步找矿的勘查靶区。

Mineral resource potential analysis and prospecting target prediction of Tarwuerbieke Au ore district, Yining county, Xinjiang

Tarwuerbieke Au deposit is located at Tulasu Au-polymetallic deposit-clustered area. Arxi Au deposit is 25km to the north.Au ore occurs in the upper andesitic tuff and clastic rock of Dahalajunshan formation of Lower Carbonifereous Series. Au mineralization occurs in five cataclastic alteration zones and is controlled by NW cataclastic zone in magcro scale and constrained by combination of explosive, crypto-explosive breccia and sub-volcanic porphyry. Strata associated with Early Carboniferous volcanism, structure (volcanic apparatus) and sub-valcanic rock varieblly controlled the metallogenesis. In the future prospecting the prospecting range should be extended to depth and surroundings and the complex metallogenic law of multi-type Au ore (epithermal, porphyry and breccia types) summarized to explore zoning of ore body and transformation from Au mineralization to Cu (poly-metallic mineralization) to depth so as to expand the resource potential. 7 targets are predicted for further prospecting.