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作 者:齐立平 宋国正 杨志全 QI Li-ping;SONG Guo-zheng;YANG Zhi-quan(Shandong Geo-Surveying and Mapping Institute, Jinan 250002, China;No.6 Institute of Geology and Mineral Resources Exploration OfShandong Province, Zhaoyuan 265400, China;Shandong Geo-Minerals International Investment Co., Ltd., Jinan 250014, China)
机构地区:[1]山东省地质测绘院,山东济南250002 [2]山东省第六地质矿产勘查院,山东招远265400 [3]山东地矿国际投资有限公司,山东济南250014
出 处:《世界有色金属》2019年第11期170-178,共9页World Nonferrous Metals
摘 要:山东省胶西北地区,是我国一个重要金矿成矿区、重要金矿产区,矿床类型主要为“焦家式”金矿,即破碎带蚀变岩型。最近一个找矿高峰期,探矿深度由之前的600m以浅增加至600m^2000m、探矿目标由主破碎蚀变岩带至穿越该带并进入其下范围。本文据最近探矿高峰期第一个寺庄金矿深部找矿突破项目测取的大量一手资料,从花岗岩石仅叠加热液蚀变作为突破口,逐步深入地分析、研究了岩石经历构造破碎、再叠加热液蚀变,主带内岩石破碎、蚀变特点,主带内及其下岩石破碎与金矿化,成矿后叠加一次强烈构造积压活动等,建立成矿作用,复原:岩石→构造→热液→成矿的过程,取得了本区金矿成矿作用经历了两次引张作用、两次热液活动、一次压扭性活动较为符合实际的认识。The northwestern Jiaodong area of Shandong Province is an important gold mineralization area and an important gold mineral production area in China. The deposit type is mainly the "Jiaojia type" gold deposit, which is the fractured belt altered rock type. In the recent peak prospecting period, the prospecting depth was increased from 600 m to 600 m ~ 2000 m in the previous period, and the prospecting target was taken from the main broken altered rock to cross the belt and enter the lower range. According to the large amount of first-hand data measured by the deep prospecting project of the first Sizhuang gold mine in the recent prospecting period, the granite is only superimposed on the hydrothermal alteration as a breakthrough, and the rock is gradually analyzed and studied. Hydrothermal alteration, characteristics of rock fragmentation and alteration in the main belt, rock fragmentation and gold mineralization in the main belt and its underlying rock, and a strong structural backlog activity after mineralization, establishing mineralization, restoration: rock → structure → From the process of hydrothermal → mineralization, it has achieved two understandings of the mineralization of gold deposits in this area, two hydrothermal activities, and one compression-torsion activity.
分 类 号:X703[环境科学与工程—环境工程]
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