【摘要】 在矿床地质研究的基础上,将五龙金矿的内生成矿作用从早到晚划分为5个成矿阶段,分别为纯石英阶段（Ⅰ）、黄铁矿—石英阶段（Ⅱ）、黄铁矿—辉铋矿—石英阶段（Ⅲ）、多金属硫化物—灰色石英阶段（Ⅳ）、碳酸盐阶段（Ⅴ）。对其中具有工业矿化的第二（Ⅱ）和第四（Ⅳ）主成矿阶段进行了石英流体包裹体Rb-Sr法测年,上述两个阶段年龄值分别为120±3Ma和112±1Ma,说明一个中、大型金矿的形成,其主成矿阶段可能要持续8Ma左右。Sr同位素的初始值(Ⅱ:I_Sr=0.71541±0.00008,Ⅳ:I_sr=0.71603±0.00006)表明,不同成矿阶段的成矿物质来自同一源区,且以壳源为主。更多还原

【Abstract】 Based on the study of ore deposit geology, the ore-forming process of the Wulong gold deposit was divided into five stages from early to late, the pure quartz stage ( Ⅰ ) , pyrite-quartz stage ( Ⅱ ) , pyrite-bismuthinite-quartz stage ( Ⅲ ) , polymetallic sulfide-quartz stage ( Ⅳ ) and carbonate stage ( Ⅴ ). The Rb-Sr dating of fluid inclusion in quartz of stage I and stage IV gave values of 120Ma and 112Ma. This shows that the time span for the main ore-forming stages of a middle-large scale gold deposit is about 10 Ma. The initial ratios of Sr isotope (stage Ⅱ : ISr = 0. 71541±0. 00008, stage Ⅳ : ISr = 0. 71603 ± 0. 00006) indicate that the ore-forming material of different ore-forming stages came from the same source of continental crust.更多还原