铜陵地区矿床地质特征与成矿规律研究

Study on Geological Characteristics and Metallogenic Regularity of Ore Deposits in Tongling Area

铜陵矿集区位于长江中下游铁铜金银多金属成矿带中部,是我国铜金矿产重要生产基地之一。为了深化铜陵地区矿床的相关研究工作,为找矿工作的规范化实施提供进一步的指导,对铜陵地区矿床地质特征与成矿规律展开研究。通过梳理各容矿地层特征、矿床地质特征、岩浆岩特征,结合矿床空间分布规律、能源矿产富集规律、金属矿床成矿系列规律,总结铜陵地区成矿规律。确定铜陵地区矿体主要以岩浆热液+矽卡岩型矿床为主,主要的赋矿层位T1n含矿床点16个,占总资源的96.91%;矿产资源基于时空分布层面为“1心2带”,各矿床(点)围绕岩体呈“一圈多层、多位一体”分布;铜具1带、7层、6个中心富集规律,金具4带、2层、1个破碎富集规律,铅锌具3带、2层、1个破碎富集规律。

The Tongling ore concentration area is located in the middle of the iron-copper-gold-silver polymetallic metallogenic belt in the middle and lower reaches of the Yangtze River.It is one of the impor-tant production bases of copper and gold minerals in China.In order to deepen the related research work of deposits in Tongling area and provide further guidance for the standardized implementation of prospecting work,the geological characteristics and metallogenic regularity of deposits in Tongling area are studied.By combing the characteristics of the ore-bearing strata,the geological characteristics of the deposit,the char-acteristics of magmatic rocks,combined with the spatial distribution of the deposit,the enrichment of ener-gy minerals,and the metallogenic series of metal deposits,the metallogenic regularity of Tongling area is summarized.It is determined that the ore bodies in Tongling area are mainly magmatic hydrothermal+skarn type deposits,and the main ore-bearing strata are 16 T1n ore-bearing points,accounting for 96.91%of the total resources.Based on the spatial and temporal distribution level,the mineral resources are'one heart two belts',and the deposits(points)are distributed around the rock mass in a circle of multi-layer and multi-in-one.Copper has one belt,seven layers and six center enrichment laws,gold has four belts,two lay-ers and one crushing enrichment law,and lead and zinc have three belts,two layers and one crushing enrich-ment law.