【摘要】 文章通过对区域成矿背景、矿区地质特征、物化探特征、矿床成因及成矿条件等的分析,对该成矿区带的找矿前景、找矿意义进行了简要评述。矿区位于华北地台北缘,明星沟火山岩盆地周边,构造基底由太古界上集宁群片麻岩和太古代混合岩化花岗岩组成,矿区中心主要出露燕山期正长花岗(斑)岩和石英斑岩。矿体主要赋存于碎裂石英斑岩、正长花岗(斑)岩体中,呈筒状产出。主成因类型属低品位斑岩型钼矿床,有可能发展为中型矿床。目前深部已发现有原生硫化钼矿体存在,局部原生矿厚度达到150m以上。此矿床的成功发现,为在内蒙古地区寻找壳源型斑岩矿床提供了经验,对该成矿区带找矿有现实指导意义。更多还原

【Abstract】 Based on regional mineralizing background,mine geology,geochemical and geophysical exploration,ore genesis and ore-forming conditions,ore prospecting and significance in the Dasuji porphyry molybdenum deposit are briefly reviewed.The deposit is located at north margin of North China platform and surrounding area of Mingxinggou volcanic basin.Basement rocks are composed of Archean upper Jining group gneiss and Archean migmatitic granitoids.Yanshanian syenograntic porphyry and quartz porphyry are outcropped in the center of the deposit.Ore bodies are hosted in cracked quartz porphyry and syenograntic porphyry,showing tube-shaped occurrence.It is a lower grade porphyry type Mo deposit,and might become middle scale.Primary molybdenum sulfide ores are found in the depth with more than 100m thick in some parts.Successful finding of the deposit provides experience for crust-origin porphyry Mo deposit in the Inner Mongolia,and has actual significance for ore-finding in the belt.更多还原