内蒙古赤峰山金-多金属矿床特征及找矿方向

赤峰山金．多金属矿位于北山多金属成矿带，区内共发现金．多金属矿脉114条，其中金和含金矿脉19条，均产于华力西晚期黑云二长花岗岩体和斑状花岗闪长岩株北接触带上的蓟县系平顶山群大理岩中，受接触带夕卡岩化带及近EW、NE、NW和NNW向断裂所控制。在空间上由内一外依次分布着高温热液接触交代夕卡岩型铜．铁矿床，中低温热液型金．铅．多金属矿床，明显地反映出岩浆热液型矿床自高一中一中低温的水平分带特征，呈现出与一般热液型矿床相一致的成矿序列。中酸性小岩株、岩枝与碳酸盐岩内外接触带的破碎带是赋矿的有利部位，夕卡岩化带以及地表遭受强烈氧化而形成的氧化铅及砷酸岩矿物是直接的找矿标志。

Geological features and ore-finding direction of the Chifengshan gold-polymetallic deposit, Inner Mongolia

The Chifengshan gold-polymetallic deposit is located in the Beishan polymetallic mineralization belt. There are 114 gold-polymetallic veins in the area, among them 19 are gold veins and auriferous veins, they occurred in the marble of Jixian System Pingdingshan Group which located in the north contact zone between biotite adamellite rock body and porphyritic granodiorite stock of Later Variscan, and controlled by the contact zone skarnization belt and EW, NE, NW and NNW strike fault. In the special, the hydrothermal contact metasomatic skarn type copper-iron deposit and low to moderate temperature hydrothermal type gold-lead-polymetal deposit distributed from inside to outside and reflected the horizontal zoned feature of magmatic hydrothermal deposit from high, moderate and low to moderate temperature, and presented the same metallogenic succession with common hydrothermal type deposit. The fracture zone of the inside and outside contact belt between intermediate-acid stock and apophysis and carbonate rock is the favored place to host ore, and the skarnization belt, oxidized lead caused by the strong oxidization in the earth's surface and arsenate mineral are the direct sign for ore-finding.