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1地质背景阿萤石矿区位于中朝准地台与蒙古海西褶皱带连接地段的扬子褶皱带内,其间有深大断裂通过(白鸽等,1983),属四子王旗萤石矿成矿带,该成矿带位于内蒙古自治区二连—四子王旗—白云鄂博一线,呈NE-SN向展布,属滨太平洋成矿域大兴安岭成矿省,成矿带内已发现大型沉积改造型萤石矿床2处,中型热液充填型萤石矿床2处。沉积改造型萤石矿床呈层状,赋存于结晶灰岩中,Ca F237.02%~94.56%。热液充填型萤石矿床呈脉状,受构造裂隙控制,主要矿体分布在花岗闪长岩内
1 Geological Background A fluorite mine is located in the Yangtze fold belt connecting the Jungang-Jungmun platform with the Mongolia Hercynian fold belt, with deep faults (Baige et al., 1983) The metallogenic belt is located in Erlian-Siziwang Banner-Bayan Obo line in Inner Mongolia Autonomous Region and is distributed in the NE-SN direction. It belongs to the Daxinganling mineralization province of the Binhai Pacific metallogenic domain. There are 2 large-scale altered sedimentary fluorite deposits in the metallogenic belt , Medium hydrofluoric-type fluorite deposit 2. The sedimentary-modified fluorite deposit is stratified and occurs in crystalline limestone with a Ca2 F237.02% ~ 94.56%. The hydrothermal-filled fluorite deposit is vein-shaped and controlled by tectonic fissures with the main orebodies distributed in the granodiorite