甘肃南泉银金矿床控矿因素及找矿方向

ORE-CONTROLLING FACTORS AND EXPLORATION OF NANQUAN GOLD-SILVER ORE DEPOSIT

南泉银金矿床位于塔里木—中朝板块内北山陆缘活动带南缘,俞井子—柳园陆内裂谷带中,该裂谷带为铜、金、银、铁、铅、锌多金属成矿带。通过近几年的普查工作,该矿床已估算银资源量约300t。文章从成矿地质背景、矿床地质特征等入手,分析了矿床的控矿因素,认为该矿床受地层、岩性、构造及岩浆岩等因素控制;并大致总结了其找矿方向,初步认为南泉矿区及花牛山矿区结合部,以及矿床深部是该矿床今后找矿的重要方向。

Nanquan gold-silver deposit is located in the Yujingzi-Liuyuan intercontinental rift at the south margin of Beishan epicontinental active belt in the Tarim-North China Craton. This rift is a poly - metallogenic belt, including copper, gold, silver, iron, zinc, lead, etc. Estimated silver ore resources are about 300t after recent years geological prospecting. By analyzing ore-forming setting, geological features, ore-controlling factors and ore-forming marks, deposits are controlled by strata, lithologic character, structure and magmatite. It is proposed preliminarily that the conjoint area of Nanquan and Huaniushan mines and the deposit＇s deep-seat are the important exploration potential.