广西北香银多金属矿床成矿地质条件与找矿潜力分析

北香矿区北西向同沉积断裂对矿床的空间分布、产状起主要控制作用,其次一级北西向断裂则是矿床的主要赋存构造,矿床的形成受地层、岩性和构造双重控制.通过与丹池矿带中的类似典型矿床对比,指出北香矿床具有与大厂长坡矿床和大福楼矿床相似的成矿条件,泥盆纪地层与北西向同沉积断裂共同控矿,矿体空间产出模式应都具有"上脉下层"的特点;结合已完成的地、物、化、遥等工作成果,认为在矿床的中深部有寻找似层状矿体的巨大潜力.

GEOLOGICAL ORE -FORMING CONDITIONS AND PROSPECTING POTENTIALITY OF BEIXIANG SILVER POLYMETALLIC DEPOSIT, GUANGXI PROVINCE

It is considered in the Beixiang ore field that NW - trending syn - sedimentary faults control distribution and occurrence of the ore bodies, and subsidiary fractures are ore- hosting structures. Ore formation is controlled by strata, lithology and structure. After comparatively analyzing ore - forming conditions between Beixiang deposit and the type ones in the Dan - Chi belt, it is concluded that ore - forming conditions of Beixiang deposit are similar to that of Changpo and Dafulou deposits in the Daehang ore field. Namely Devonian strata and NW - trending syn - sedimentary faults control ore bodies, and ore distribution in space show characters of veinlets in upper parts and bedded ores in lower parts. Combined with the results of geology, geophysical prospecting, geochemical prospecting and remote sensing, there still have great potentialities in prospecting for underlying bedded ore bodies in the mediumdeep space.