埃塞俄比亚阿迪戴斯塔VSHMS型铜锌矿床地质特征

Geological Characteristics of Adidesta VMS Type Copper-zinc Deposit in Ethiopia

摘要:

VSHMS型矿床是近年来研究块状硫化物矿床的新动向，埃塞俄比亚北部阿迪戴斯塔矿床为一个铜锌异体共生、伴生银的大型VSHMS型铜锌多金属矿床，通过对该矿床的区域地质背景、矿区地质、矿床地质特征的研究，指出铜锌矿床赋矿地层为新元古代特沙里特浅变质火山沉积岩群，矿带具有“双色蚀变带”特征，并与典型VSHMS型矿床对比，初步探讨该矿床的成因类型及成矿模式。

Abstract:

VSHMS type deposit is a new trend for researching massive sulfide deposits in recent years. Adidesta deposit in northern Ethiopia is a large VSHMS type copper-zinc polymetallic deposit with the characteristics of variant symbiosis and associated silver. Through study on regional geological background, geology, geological characteristics of the deposit, it is pointed out that the ore-bearing strata of copper-zinc deposit are Proterozoic Teshalite metamorphic volcanic sedimentary rock group. The ore belt has the "color alteration zone" characteristics. Comparing with typical VSHMS deposits, genesis type and metallogenic model of the deposit are preliminaryly studied.