甘肃南金山金矿地质特征及金富集规律分析

南金山金矿床是我国甘肃北山成矿带的重要组成部分,矿床受控于近东西向和北东向断裂构造组成的帚状构造系统,成矿地质背景条件独特。研究表明:南金山金矿主要赋存于次生石英脉体中,以透镜状、似脉状、脉状为主,具分支复合、膨大紧缩现象,帚状构造收敛区域构造应力集中,含矿热液来源丰富,有利于交代成矿;金(银)矿向西倾伏,深部找矿潜力巨大,向东跷起,尚未发现稍有规模的盲矿体;金的富集与矿石中黄铁矿等金属矿物及其次生氧化矿物的含量具正消长关系;矿石中金银含量具正消长关系。

Analysis on geological characteristics and gold enrichment law of Nanjinshan gold deposit in Gansu Province

Nanjinshan gold deposit is an important part of North Mt. metallogenic belt in Gansu province, China, which is controlled by the broom tectonic system composed of Near East-west and northwestward fault structures, and the metallogenic geological background conditions are unique. Studies have shown that:Nanjinshan gold deposit is mainly found in the secondary quartz veins, with lenticular, veins, veins, with branching compound, inflated tightening phenomenon, broom structure convergent region tectonic stress concentration, mineral-bearing hydrothermal sources are rich, conducive to accounting for mineralization, gold (silver) ore westward, deep prospecting potential is huge, to the East seesaw, No slightly larger blind orebody has been found, the enrichment of gold is positively related to the content of metal minerals such as pyrite and its secondary oxidized minerals in ore, and the content of gold and silver in ore has a positive and decreased relationship.