安徽省东至县土地坑-塔下一带铅锌矿地质特征及找矿标志

Geological characteristics and ore exploration marks of Chentan gold deposit in Dongzhi County of Anhui Province

安徽省东至县土地坑—塔下一带铅锌矿位于扬子陆块北缘,是一受构造控制的中低温热液矿床,铅锌资源量具一定规模。矿体呈透镜状、似层状产于青白口系的葛公镇组的地层中。该区共圈定有铅锌矿体10个,金矿体1个,铅锌矿石类型分别为含铅矿石英—重晶石型、含铅锌矿重晶石化角砾岩型、含铅矿重晶石化变泥岩型。结合成矿地质背景,研究分析了矿区铅锌地质特征,控矿因素,并对矿床成因进行了探讨,提出了找矿标志,对安徽东至地区寻找同类矿床具有借鉴意义。

The lead-zinc deposit in the area of tukeng tahxia,Dongzhi County,Anhui Province is located in the northern margin of the Yangtze Landmass.It is a medium low temperature hydrothermal deposit controlled by the structure.The leadzinc resources measure a certain scale.The ore body is lenticular and stratiform and occurs in the strata of the gegongzhen formation of the Qingbaikou system.There are 10 lead-zinc ore bodies and 1 gold ore body delineated in this area.The lead-zinc ore types are respectively lead bearing quartz barite type,lead-zinc bearing barite breccia type and lead-bearing barite metamorphic mudstone type.Combined with the metallogenic geological background,the geological characteristics and ore controlling factors of lead and zinc in the mining area are studied and analyzed,the genesis of the deposit is discussed,and the prospecting criteria are put forward,which can be used for reference in the search for similar deposits in Dongzhi area,Anhui Province.