【摘要】 东坪钨矿床是近年在赣北地区新发现的首个超大型石英脉型黑钨矿矿床,位于长江中下游成矿带幕阜山地区东坪—香炉山钨矿找矿远景区东部。矿床赋矿层位为新元古代双桥山群安乐林组浅变质岩系,北东向断裂及其两侧的次级裂隙为区内主要控矿构造、容矿构造,隐伏的燕山晚期黑云母二长花岗岩为成矿岩体,与区内钨多金属成矿关系密切的为石英脉状硅化;两个矿带的钨矿体均产于成矿岩体外接触带,呈现了石英脉型黑钨矿矿床典型的"五层楼"分带特征,矿石工业类型主要为黑钨矿矿石;明确了构造和岩浆岩等主要控矿因素;总结出地表微细裂隙云英岩化-黄铁矿化蚀变带、含硫化物石英细脉带、石英脉、重砂及地球化学异常为区内主要找矿标志。更多还原

【Abstract】 Dongping tungsten deposit is the first super large quartz vein type wolframite deposit found in the north of Jiangxi Province in recent years. It is located in the east of the prospecting area of Dongping-Xianglushan in the Mufu Mountain metallogenic belt in the middle and lower reaches of the Yangtze River. The ore bearing strata of the deposit are shallow metamorphic rocks in the Neoproterozoic Anlin group of Shuangqiao Formation. The north-east trending fault and its secondary fissures are the main ore controlling and ore bearing structures in the area. The concealed Late Yanshanian black mica granites are the ore-forming rock mass, and the quartz vein silicification is closely related to the tungsten polymetallic mineralization in the area. The tungsten ore bodies of the two ore belts occur in the contact zone of the ore forming rocks, showing the typical "five storey" zoning characteristics of the quartz vein type wolframite deposit, and wolframite ore is the main ore type. It is concluded that the mica-pyritization alteration zone, sulfide-bearing quartz vein zone, quartz vein, heavy sand and geochemical anomalies are the main prospecting indicators in this area.更多还原