俄罗斯什罗金银矿地质特征及成因分析

Geological Characteristics and Genesis of Shro Gold-Silver Deposit in Russia

什罗金银矿成因类型属岩浆期后气水热液型矿床。银矿体赋存于北北西向破碎带内,破碎带内发育碳酸盐细脉,局部碳酸盐脉脉宽可达2m～4m,围岩普遍具破裂岩化,片理化及糜棱岩化等构造挤压形迹特征。这些先期构造破碎带控制了矿体的形态、规模及产状,是导储矿液的良好空间。

The genetic type of Shiluo Au-Ag deposit belongs to post-magmatic gas-water hydrothermal deposit. Silver ore bodies occur in NNW-trending fractured zones, where carbonate veins are developed. The width of local carbonate veins can reach 2m ~ 4m. Surrounding rocks are generally characterized by structural compression, such as fracturing, schistosization and mylonitization. These early structural fractured zones control the shape, scale and occurrence of ore bodies, and are good space for guiding ore deposits.