大黄山金矿矿床特征及成矿模式研究

Study on the Characteristics and Metallogenic Model of the Dahuangshan Gold Deposit

矿区处于河西走廊过渡带中段南侧的永昌南山古隆起南部边缘部位的大黄山背斜南翼,它属于山丹-永昌加里东期金、铜、钨、银、铅(锌)成矿带的曹家口金(银)成矿区。经分析,大黄山金矿区内圈定4个金矿体、2个银矿体,属加里东晚期似斑状花岗岩岩浆期后石英脉型中低温热液型金银矿床。

The mining area is located in the south flank of the Dahuangshan anticline at the southern edge of the Yongchang Nanshan paleo-uplift on the south side of the middle section of the Hexi Corridor transition zone,which belongs to the Caojiakou gold(silver)metallogenic zone of the Shandan-Yongchang Caledonian gold,copper,tungsten,silver and lead(zinc)metallogenic belt.After analysis,there are 4 gold ore bodies and 2 silver ore bodies delineated in the Dahuangshan gold deposit area,which belong to the late Caledonian porphyritic granite-magmatic stage and post-quartz vein type medium and low temperature hydrothermal gold-silver deposit.