论文部分内容阅读
根据铜厂铜矿床辉钼矿ReOs同位素模式年龄和黄铜矿RbSr同位素等时线年龄分别为889Ma和359Ma,并依据其地质特征和与铜厂岩体之间时空关系,认为早期铜矿化发生在889Ma左右,与铜厂岩体岩浆期后热液有关;晚期铜矿化则发生在359Ma左右,是伴随区域动力变质作用发生的;其矿质来源研究表明既有来自围岩的,又有来自岩体本身的;包裹体测温资料表明成矿温度集中在两个区间:高温大于300℃,低温150~200℃。该矿床为多期、复源、多种成矿作用叠加复合的产物。
According to the ReOs isotopic pattern age of molybdenite and the RbSr isotopic isochron age of 889Ma and 359Ma, respectively, and based on their geological characteristics and the spatial-temporal relationship with the copper plant rock mass, it is considered that the early copper mineralization Occurred about 889Ma, which was related to the hydrothermal fluid after the magmatic period of the copper plant; the late copper mineralization took place at around 359Ma and occurred along with the regional dynamic metamorphism; and the study of its mineral origin showed that both from the surrounding rock and From the rock mass itself; temperature data of inclusions show that the ore-forming temperature is concentrated in two intervals: the high temperature is more than 300 ℃ and the low temperature is 150 ~ 200 ℃. The deposit is a multi-period, complex source, a variety of mineralization superimposed composite product.