滇东北铅锌成矿带会泽金牛厂筇竹寺组含矿层的发现及意义

滇东北地区是我国铅、锌、银等有色金属矿产的重要产地之一,已发现铅锌矿床、矿点和矿化点多处。以前发现的赋矿层都是碳酸盐岩,而会泽金牛厂筇竹寺组含矿层是泥质粉砂岩,此含矿层是目前滇东北铅锌成矿带中新发现的铅锌矿含矿层位,它突破了滇东北成矿带中仅碳酸盐岩中含矿的历史,显示了滇东北筇竹寺组铅锌找矿的巨大潜力。文章对该含矿层的控矿特点及矿体规模、形态进行了详细研究,以期对滇东北筇竹寺组的找矿带来新的突破。

Discovery of ore bearing layer in Qiongzhushi group of Jinniuchang in Huizhe along northeast Yunnan lead and zinc ore belt and its significance

Northeast Yunnan is one of important lead,zinc and silver producing area in China with several already discovered lead and zinc deposit or ore spot in the area.The previously discovered ore hosting layers all belong to carbonate rocks while Qiongzhushi Group host layer in Jinniuchang of Huizhe is argillaceous siltstone which is newly discovered ore bearing layer in northeast Yunnan lead and zinc ore belt.It is a breakthrough as historically the ore only discovered in carbonate rocks in northeast Yunnan ore belt and shows that there is a great potential for lead and zinc ore prospecting in Qiongzhushi Group in northeast Yunnan.An intensive research was carried out on ore controlling characteristics of the ore bearing layer as well as orebody scale and shape,and some new breakthrough of prospecting in Qiongzhushi Group in northeast Yunnan is expected.