塔西萨热克铜矿床地质特征及成因分析

Geological Charactenstics and Prospecting Criteria of Sareke Copper Deposit

萨热克铜矿床是目前我国赋存在侏罗系地层中最大规模的砂砾岩型铜矿床,位于新疆阿图什市乌恰县萨热克巴依村,该区为夹持于西南天山与昆仑山的中-新生代凹陷,赋矿层位为上侏罗统库攻贡苏组的一套河流-冲积扇相沉积的杂色碎屑岩.矿床划分为南北两个矿带,北矿带是目前正在开采的主要矿带,由4个矿体组成,矿石矿物包括辉铜矿、黄铜矿、斑铜矿以及黄铁矿等,脉石矿物主要为石英和方解石,矿石结构主要为半自形粒状结构、反应边结构及交代残余结构等.通过对萨热克铜矿的地质特征、成因及找矿标志的系统研究可得,该矿床的成因与盆地流体密切相关的沉积-改造型低温热液矿床.此外,萨热克铜矿的典型地层标志为一套康苏组湖泊-沼泽相的煤系地层.

At present, the Sareke deposits is the most massive glutenite type copper occurrence in the Jurassic strata in our country, which belongs to clamping in southwest Tianshan mountains and the Kunlun mountains in Cenozoic sag in Ulugqat County, Xinjiang Province, Its ore formation is a variegated clastic deposits in river alluvial fan facies of the Jurassic library Gongsu group. Deposit is divided into north and south two ore belts, and a total of 4 mineralised bodies were defined in the North Zone. The ore minerals include chalcocite pyrite, chalcopyrite, bornite and etc, and the gangue minerals are mainly quartz and calcite, ore main structure are disseminated, fracture shape and so on. Through the mining area vanadium ore geology and prospecting research, results show that the cause of the SaReKe copper deposit is closely related to the basin brine, and the typical stratigraphic markers for Sareke deposits are a set of lakes-swamp facies strata of Kangsu group.