珲春黑山金铜矿区地球化学垂向分带研究

GEOCHEMICAL VERTICAL ZONATION IN THE HEISHAN GOLD AND COPPER DEPOSIT,HUNCHUN

文章以黑山金铜矿区ZK001钻孔资料为基础,对该区矿化进行了矿物学、成矿元素地球化学垂向分带研究。矿物学研究表明矿区由地表向深部,夕卡岩蚀变带由外带逐渐过渡为内夕卡岩带,再过渡为正常的闪长岩。以改良格里戈良分带指数法为主,辅以重心法,确定此矿床元素综合分带序列由浅到深为①Cu+Sb+Zn+Ag;②Au+Ni+As+Co+Zn+Hg+Bi。与矿床浅部以铜矿体为主,深部以铜金矿体为主的地质事实相符合,并与矿物学分带相一致。

Based on data of ZK001 borehole in the Heishan Cu -Au deposit, mineralogy, vertical zonation of ore -forming elements have been stud- ied, From the earth＇s surface to the deeper, skaxn alteration changes from external skaxn to inner skaxn, and then transits to normal diorite. Based on Gregorian＇ s zoning index method with baryeenter method as a supplement, vertical zoning sequence of ore - forming elements changed from Cu ＋ Sb ＋ Zn ＋ Ag to Au ＋ Ni ＋ As ＋ Co ＋ Zn ＋ Hg ＋ Bi from shallow to deep sites, which is well conformed to the geological fact that Cu ores are located in the shallow parts and Au ores in the deep parts,