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通过野外地质调查、镜下鉴定、扫描电镜、电子探针、流体包裹体测温等方法和手段,对尕尔穷铜金矿的矿石组构、矿物成分、成矿温度、成矿期及成矿阶段进行了研究。结果表明,矿石成分以氧化物、硫化物及硫盐矿物为主,自然元素矿物、金-银系列互化物次之,发现了自然元素矿物自然铁、自然铋和铜锌合金矿物,工业铋矿物-辉铋矿。矿石具块状、浸染状、细脉浸染状构造,以结晶结构、交代结构为主。成矿温度以高—中温为主。含矿岩体锆石U-Pb年龄为83.2-87.1 Ma,辉钼矿Re-Os模式年龄为86.87-87.29 Ma。与成矿有关的围岩蚀变主要为夕卡岩化、硅化。成矿过程具多期多阶段的特点,其中岩浆期后热液交代作用是主要的成矿作用。矿床成因类型为岩浆期后热液接触交代作用形成的夕卡岩型铜金矿床。
Through field geological survey, microscopic identification, scanning electron microscopy, electron probe, temperature measurement of fluid inclusions and other methods, the ore composition, mineral composition, mineralization temperature, metallogenic stage and Mine stage has been studied. The results show that the ore components are mainly composed of oxides, sulfides and sulfur salts, followed by natural elemental minerals and gold-silver intermetallics. Natural elemental minerals such as natural iron, natural bismuth and copper-zinc alloy minerals, industrial bismuth minerals - bismuthinite. Ore with massive, disseminated, vein disseminated structure to the crystalline structure, account structure. The metallogenic temperature is dominated by high and medium temperature. The zircon U-Pb ages of ore-bearing rock masses are 83.2-87.1 Ma, and the molybdenite Re-Os model ages are 86.87-87.29 Ma. The alteration of wall rocks related to metallogenesis is mainly skarnization and silicification. The ore-forming process has the characteristics of multi-period and multi-stage, in which the hydrothermal metasomatism is the main mineralization. The genetic type of the deposit is the skarn type Cu-Au deposit formed by the hydrothermal contact metasomatism after the magmatic period.