青海省哈日扎矿区银多金属矿成因探讨

Discussion on the genesis of silver polymetallic ore in hariza mining area,Qinghai Province

青海省哈日扎银多金属矿矿区在行政区划上位于都兰县热水乡,大地构造上属于东昆仑山系东部。哈日扎银多金属矿床为浅成中低温热液脉型矿床,矿体主要受构造控制,流体来源主要为岩浆水,有大气降水的加入,成矿物质来源主要为岩浆,成矿背景为晚三叠世的碰撞后伸展环境。鄂拉山组陆相火山岩中导矿及容矿空间发育,是银多金属矿床的赋矿岩性。下文在对青海省哈日扎矿区银多金属矿地质特征分析的基础上,探讨其矿床成因,旨在对区内找矿工作提供一定的参考作用。

The hamizha silver polymetallic ore area in Qinghai Province is located in the hot water Township of Dulan County in terms of administrative division,and belongs to the east of the East Kunlun Mountains in terms of geotectonics.The harizha silver polymetallic deposit is a hypabyssal meso low temperature hydrothermal vein type deposit.The ore body is mainly controlled by the structure.The fluid source is mainly magmatic water with the addition of atmospheric precipitation.The ore-forming material source is mainly magma.The ore-forming background is the post collision extension environment of the Late Triassic.The ore guiding and ore bearing space of the continental volcanic rocks of the Elashan formation is developed,which is the ore hosting lithology of the silver polymetallic deposits.Based on the analysis of the geological characteristics of the silver polymetallic deposits in the hamizha mining area of Qinghai Province,this paper discusses the genesis of the deposits,in order to provide some reference for the prospecting work in the area.