辽西地区温杖子金矿床成矿系统分析

ANALYSIS ON THE METALLOGENIC SYSTEM OF WENZHANGZI GOLD DEPOSIT IN WESTERN LIAONING PROVINCE

温杖子金矿床产于辽西侏罗系髫髻山组火山-沉积岩和中生代花岗闪长岩中,矿化类型为蚀变岩型.研究表明,中生代岩浆岩含金建造、印支晚期—燕山期岩浆岩系统和韧-脆性断裂系统与成矿有密切时空及物质联系,是金矿化的主控因素;矿化类型受构造应力场和断裂力学性质控制.

The Wenzhangzi gold deposit, occurring in the volcanic-sedimentary rocks of Jurassic Tiaojishan Formation and Mesozoic granodiorite, belongs to the mineralization type of altered rock. Study reveals that the gold-bearing formation of Mesozoic magmatic rocks, Late Indosinian-Yanshanian magmatic system and ductile-brittle fault system, as the major controlling factors for gold mineralization, are closely related with the metallogenesis in terms of space, time and materials. The mineralization types are depended on both tectonic stress field and the mechanical property of fractures.