新疆东天山康古尔金矿控矿构造特征

STRUCTURES OF KANGGUER GOLD DEPOSIT IN THE EASTERN TIANSHAN MOUNTAINS,XINJIANG

作者通过构造控矿分析发现，康古尔金矿是受一韧性挤压带控制的中低温岩浆－变质热液型金矿床。成矿作用与控矿韧性挤压带从韧性向脆、韧性变形演化密切相关。本文具体分析了控矿构造类型和构造演化对矿化的控制程序以及矿体定位机制，建立了构造成矿模式指出了找矿方向。

Kangguer gold polymetallic deposit with associated copper,lead,zinc and silver,lying south of the Tu Ha basin in the eastern Tianshan Mountains,occur in the gigantic Qiugemintashi Huangshan ductile compressional belt.The formation of the deposit is closely related to the evolution of this ductile compression belt and the deposit is considered as a hydrothermal altered rock type gold deposit under the control of the ductile deformation belt. The gold deposit occurs in the intermediate acid rift volcanic rocks,was confined to the ductile compressional belt and the syntectonic pluton which formed during the orogeny as a result of the closing of the rift.The metallogenesis was synchronous with the tectono magmatic activity. A trio model comprising volcanic rocks,syntectonic pluton and normal brittle ductile shear zone in one area is proposed for the ore deposit.Volcanic rock series provided most of metallogenic material,and syntectonic pluton supplied hydrothermal fluid,thermal energy and also part of metallogenic material while the normal brittle ductile shear zone formed the ore trapping structures.“Three in one” is the necessary condition for the formation of ore deposit. The normal brittle ductile shear zone,as a late product of ductile deformation is the main target for the prospecting of ore deposits.