新疆哈勒尕提矽卡岩型铁铜矿的地质特征及找矿意义

Geological Characteristics of the Halegati Ckarn iron-copper deposit in Xinjiang and their Implications for Prospecting

哈勒尕提铁铜床矿位于西天山博罗科努Au、Pb、Zn、Cu、Mo异常带中,矿区发现矽卡岩型铁铜和铅锌矿体15个。铜矿、铁矿已达中型,通过深部工程控制,初步查明全区(331+332+333)类资源量:铜金属量15.2959万t,铁矿石量1321.83万t,铅金属量2341 t,锌金属量12905 t;平均品位Cu1.09%、TFe 25.55%、Pb 1.03%、Zn 5.70%。伴生组分金属量:金2.64 t、银223 t、锌7.31万t。主矿体Ⅳ、Ⅵ体在空间上分布与大理岩小残留体的形态、产状有关,同时也是化探异常浓集中心、物探低缓磁异常分布交汇的部位以及矽卡岩最为发育的地段。主矿体赋存有明显的规律性。这些成矿的地质、物化探标志性特征,对该区寻找矽卡岩型矿床有重要指导意义。

The Halegati iron-copper deposit is located in the geochemical anomaly zone of Au,Pb,Zn,Cu and Mo elements,Boluokenu,West Tian Shan,where 15 skarn-type iron-copper and lead-zinc ore bodies have been found. The copper and iron ores are proven medium-sized,respectively. By deep engineering control,331 ＋ 332 ＋ 333 types of resources of the whole district are ascertained,which are 152959 tons of metal quantity of copper,13. 2183 million tons of iron ore quantity,2341 tons of metal quantity of lead,and 12905 tons of zinc metal quantity. The average grades of Cu,TFe,Pb and Zn are 1. 09%,25. 55%,1. 03% and 5. 70 %,respectively. And the metal quantity of associated metal components,including gold,silver and zinc,is respectively 2. 64 tons,223 tons and 73100 tons. The spatial distribution of the main orebodies Ⅳand Ⅵ is related with the morphology and occurrence of small marble residuals. The main orebodies Ⅳand Ⅵ are the concentration centers of geochemical anomalies,conjunction areas of low and gentle magnetic anomaly distributions,as well as the loci with the most developed skarn. The occurrence of the main orebodies has obvious regularities. These geological,geophysical and the geochemical characteristics can guide further search for skarn-type deposits in this area.