黑龙江砂宝斯矿田三十二站金矿地质特征及区域成矿条件分析

Geological Characteristics and Analysis of the Regional Mineralizing Conditions of Sanshierzhan Gold Deposit in Shabaosi Gold Field,Heilongjiang Province

三十二站金矿位于额尔古纳隆起的北东向端,上黑龙江断陷盆地的边缘,属砂宝斯矿田重要组成部分,成因类型为破碎蚀变岩型中低温热液型矿床。区内共发现7条矿化蚀变带,其内8条矿体,品位最高为4.88×10-6,平均为1.49×10-6,围岩蚀变以硅化、碳酸盐化、绢云母化等中—低温蚀变为主。区域上金矿化主要受穹隆构造控制,侏罗系陆相碎屑沉积岩提供了部分矿源,找矿标志明显。

The Sanshierzhan gold deposit is located in the northeast of Erguna rising part, on the edge of Heilongjiang basin of fault subsidence, belonged to the outside of shabaosi gold field. The genetic type belongs to the meso-epithemal deposit of the fracture zone-alterde rock. There are seven mineralization alteration zones in it, including eight oerbodies in the gold deposit. Its highest ore grade is 4.88×10^-6and average grade is 1.49×10^-6. The characters of country rock alteration are silicification, schistositizion, carbonatization, sericitization. The regional gold mineralization distribution is mostly controlled by the dome structure. And the Jurassic terreatrial clast depositing rock offers a part of gold source. The prospecting indicators are very obvious.