河北老虎沟门金多金属矿地质特征及找矿方向

Geological characteristics and prospecting direction analysis of Laohugoumen gold polymetallic ore In Hebei

河北省老虎沟门金多金属矿地处上黄旗构造岩浆岩成矿带西部,多组深大断裂的交汇区域。断裂构造、岩浆热液活动发育,构成了该区主要成矿地质背景。已发现营房银铅锌矿床、北岔沟门铅锌矿床、牛圈银金矿等众多的大型—中型铅锌银金矿床。区内已发现4条矿化体,矿化体形态、产状及矿化范围严格受断裂构造控制。老虎沟门金银多金属矿属于受断裂构造控制的中低温热液—石英脉型及韧性剪切带型矿床,石英脉、黄铁矿化是寻找金多金属矿的重要标志。通过对区域成矿地质条件和矿区地质特征的分析,总结了矿区的控矿因素、矿床类型和找矿标志,为进一步地质勘查工作指明了方向。

Laohugoumen gold polymetallic mining area is located in the west of the Shanghuangqi tectonic magmatic metallogenic belt. The belt is an intersection region with many deep faults,fracture structure and magmatic hydrothermal activities developed,which constitute the main metallogenic geological background in this area. Many large to medium sized lead-zinc silver gold deposits have been discovered,such as Yingfang silver lead zinc deposit,Beichagoumen lead zinc deposit and Niujuan silver gold deposit. Four mineralized bodies have been found in the area. The shape,occurrence and mineralization scope of the mineralized bodies are strictly controlled by strcture of faults. The Laohugoumen gold and silver polymetallic ore belongs to the middle to low temperature hydrothermal quartz vein type and the ductile shear zone type deposit controlled by the fracture structure,and the quartz vein and the pyrite mineralization are the important marks for finding the gold polymetallic ore. Through the analysis of regional metallogenic geological conditions and geological features of the mining area,the ore controlling factors,deposit types and prospecting criteria are summarized,which indicate the direction for further geological exploration.