福建浦城银坑矿区铅锌矿地质特征及找矿方向

On the Geological Characteristics and Ore finding Perspective of the Yinkeng Lead zinc Deposit in Pucheng County,Fujian Province

浦城银坑铅锌矿产于早元古代麻源(岩)群南山(岩)组、大金山(岩)组变质岩与花岗岩体的外接触带内,矿体明显受北东向断裂构造控制,呈脉状分布,北东向断裂为区内主要控矿构造,矿体总体沿北东向断裂两侧分布,而北东向断裂具有多期次活动特征,成矿物质来自早元古代含矿地层和燕山晚期岩浆热液,通过对矿区地质特征及成矿条件,认为矿床成因类型为硅化破碎带蚀变岩型铅锌矿床。

Pucheng lead and zinc deposit exist in Exocontact beteen Early Proterozoic Mayuan Group Nanshan Formation, Dajinshan Formation and Granitic body. The ore types being veind ore body, which is controlled by the faulted structures. The North East fault is the main ore controlling structure in the area. The ore bodies are distributed along both sides of the North East fault, while the North East fault has the characteristics of multiple stages. Ore froming materials come fromn the Early Proterozoic ore-bearing formation and the Late yanshanian magmatic hydrothermal. It is considered that the deposit belongs to the silicified fracture zone altered rock type leadzin.