Jinchangyu Gold Mine is one of the largest gold deposits on the northern margin of North China Plate and occurs in the Late Archean greenstone fold belt. Two kinds of ores have been recognized: gold-bearing albite vein and gold-bearing quartz vein. tudies of ore-controlling structures show that the Jinchangyu anticlinorium and related NNE trending compressed schistosity zone, both of which resulted from two-stage regional foldings, are the main ore-controlling structure of Jinchangyu Gold Mine. In the course of schistosity and alteration, Fe2 O3, CaO, and MgO were clearly brought out from amphibolite in surrounding rocks. Albite dykes and quartz vein penetrate along the surfaces of extruding schistosity, both of which are roughly same in width, gold grade, occurrence and material source. They are probably the products of the same mineralization at different mineralization stages. Characteristics of rare earth elements, sulfur and lead isotopes show that the mineralization was related to deep magmatism and the strata remelted due to the magmatism provided part of mineralized materials. Therefore, it is concluded that the Jinchangyu Gold Mine is a magmatic and thermal-fluid-type deposit with mineralized materials collectively from remelting mantle, lower crust and partial surrounding rocks (i. e. Archaeozoic greenstone belt) under the influence of Yanshanian intracontinental orogeny during the early Mesozoic.%金厂峪金矿是我国华北板块北缘大型金矿床之一,矿床产在晚太古宙褶皱绿岩带中,矿石类型主要包括含金钠长石脉和含金石英脉两种.控矿构造研究表明,在两期区域性褶皱作用下,形成的金厂峪复背斜及与之相关的北北东向挤压片理化带是金厂峪金矿的主要控矿构造.在片理化和蚀变过程中围岩斜长角闪岩的Fe2O3、CaO、MgO等成分被明显带出,钠长石脉和石英脉沿挤压片理面贯入,二者宽度、金品位、产状、物质来源基本一致,是同一成矿作用下不同成矿阶段的产物.稀土元素和硫、铅同位素特征表明成矿过程与深部岩浆作用有关,地层在岩浆作用下重熔,提供了一部分成矿物质.因此,本文认为金厂峪金矿是在中生代早期燕山陆内造山运动影响下,成矿物质由地幔、下地壳和部分围岩即太古宙绿岩带重熔共同提供的岩浆热液型金矿床.
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