【摘要】 河南汝阳东沟钼矿床是国内发现并探明的第三个特大型斑岩型钼矿床。通过对该矿床工程地质条件与成矿作用关系的分析研究,可总结出以下规律:1)矿床赋存于燕山期强酸性花岗岩侵入的前寒武纪地层内;2)赋矿岩石为中元古界长城系熊耳群鸡蛋坪组的火山岩系,主要岩性为三大类:安山岩、英安岩及安山质火山角砾岩;3)矿床工程地质条件为中等,其特点以岩石破碎为主;4)面状破碎、面状矿化是汝阳东沟特大钼矿床工程地质条件和成矿的最重要特征;5)引裂构造形成矿质矿液向围岩贯入的主要通道;6)容矿裂隙构成矿化的有利空间,容矿裂隙密度与矿化强度成正比。更多还原

【Abstract】 Henan Ruyang Donggou Mo mineral deposit is the 3rd huge mould porphyry Mo mineral deposit ascertained in china.Through the research to the engineering geology condition and mineralization,the following law can be summed up:1)Mineral deposit is composed to the stratum of the preceding Cambrian Period that is invaded by strong acid ganite in Yanshan phase;2)Composing the Proterozoic volcanic rock system of Great Wall system Xionger group Jidanping formation of mineral rock,major rock consists of three big kinds:Andesite,dacite andesite-volcano breccia;3)Mineral deposit engineering geology condition is medium,and its characteristic is rock broken;4)Planar form broken and planar ore-forming is the most important characteristic of Ruyang Donggou huge Mo mineral deposit’s engineering geology conditional and mineralization;5)Structure Gennerating Ore-forming Fracture is the major channel of mine nature and mine liquid into the country rock;6)Ore-held fissure forms the advantageous space of mineization,and density of ore-held fissure is ratio with mine intensity.更多还原