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本文旨在通过对山东招远玲珑金矿床含金石英脉中流体包裹体特征的观察和测温,对矿床的成矿温度、压力和成矿介质的性质提出一些初浅的看法。 一、矿床地质特征及包裹体特征 招远玲珑金矿位于胶东隆起栖霞复背斜的西半部。区内地层不发育,仅在矿区东南部出露有太古界胶东群,由斜长角闪岩、黑云母片岩、黑云母变粒岩组成。岩浆岩在区内广为发育,主要为细粒含石榴石花岗岩和中细粒或细中粒斑状花岗岩,同位素年龄为126—145百万年,属燕山中期。 含金石英脉均分布于玲珑花岗岩内,并受花岗岩中北东东、北东及北北西向断裂控制。脉体空间形态多呈饼状、透镜状,少数为柱状和不规则状。石英脉两侧常常发育有宽
The purpose of this paper is to provide some primary views on the mineralization temperature, pressure and the nature of metallogenic media by observing and measuring the fluid inclusions in the gold-bearing quartz veins of the Linglong gold deposit, Shandong Province. First, the geological characteristics of the deposit and inclusions Zhaoyuan Linglong Gold Mine is located in the Qiaodong uplift Qixia complex anticline in the western half. The strata in the area are not well developed. Only the Archean Jiaodong Group is exposed in the southeastern part of the mining area and consists of amphibolite, biotite schist and biotite granulite. Magmatic rocks widely developed in the area, mainly composed of fine-grained garnet-bearing granite and fine-grained or fine-grained granite with an isotopic age of 126-145 million years, belonging to the mid-Yanshanian period. The gold-bearing quartz veins are all distributed in Linglong granite and controlled by the east-northeast, northeastern and north-northwest trending granites. Veins space shape mostly cakes, lenticular, a few for the columnar and irregular. Both sides of quartz veins often develop wide