新疆乌什北山金矿成矿地质特征

Metallogenic Geological Characteristics of the Beishan Gold Deposit in Wushi area,Xinjiang

乌什北山金矿产于下石炭统干草湖组砂岩、二叠系小堤坎力克组火山岩中。通过工程揭露发现1条金矿化蚀变带,长约1520 m,宽5~20 m,走向近NS向,主要矿化蚀变为强褐铁矿化、黄钾铁矾化、硅化等。综合分析矿区地质和矿化特征,初步认为乌什北山金矿为浅成低温热液型矿床,与二叠纪火山活动密切相关。

The Wushi Beishan gold deposit is hosted in the sandstone of the Lower Carboniferous Gancaohu Formation and the volcanic rocks of the Permian Xiaodi Kanlik Formation.By trenchingexploration,a gold mineralization alteration zone,with 1520 meters in length and 5-20 meters in width,was identified.Themain mineralization alteration broadly stridesin north-south,include strong limonite mineralization,jarosite,silicification,etc.Comprehensive analysis of the geological and mineralization characteristics of the mining area,it is preliminarily considered that the Wushi Beishan gold deposit is a epithermal type and itwasgenetically related to Permian volcanic activity.