新疆萨热克铜矿控矿因素的探索

Discussion of the ore-controlling factors of Sareke copper deposit in Xinjiang

萨热克铜矿床控矿因素的研究对寻找靶区意义重大。萨热克盆地铜矿赋矿地层为库孜贡苏组(J3k)砾岩;经含矿钻孔编图、岩芯样品测试后发现矿体受控于砂质泥岩、砾岩、岩屑砂岩夹泥岩的组合岩系,在矿区多条小断层附近的钻孔中发现矿体富集现象明显,初步认为该现象是流体沿断层裂缝进入到含铜砾岩层后与其发生化学反应生成含铜矿物沉淀的结果;矿区样品的分析表明:萨热克铜矿床是含铜砾岩沉积后盆地卤水、热液和有机质沿断层裂隙进入砾岩层作用的产物。最后认为铜矿床控矿因素大致是:岩系、断层、盆地卤水、热液和有机质。

It is in great significance for us to study ore-controlling factors and to look target in Sareke copper deposit, Xinjiang. The Late Jurassic Kuzigongsu Formation in the Sareke Basin is ore-bearing strata for Sareke copper deposit, it is discovered that the ore body is controlled by rock series combination of sandy mudstone, conglomerate, rock-fragment sandstone with mudstone layered on the basis of ore drilling map, core samples testing. The drillhole ore enrichment evident is obvious in the near small faults of the mining area. Preliminary view is that this phenomenon is a result for which the fluid invades along faults and fractures into copper-bearing conglomerate to take chemical reaction with copper conglomerate, and then copper minerals are produced and precipitated. The analysis of mining area samples indicates that Sareke copper deposit is a chemical reaction production after formation of copper conglomerate sedimentary strata, the basin brine, hydrothermal fluid and organic material along the fault fractures and fissures into the conglomerate layer with copper deposit accumulation. It is concluded that in the copper deposit ore controlling factor is roughly considered to be rock formation, faults, hot basin brine, hydrothermal fluid and organic material.