秘鲁邦沟铁多金属矿地质特征及成矿阶段划分  

Geological characteristics and metallogenic stages of the Pongo iron polymetallic ore deposit in Peru

作　　者：姚仲友[1] 崔聚荣 魏文俊 董彦璞 刘君安[1] YAO Zhongyou;CUI Jurong;WEI Wenjun;DONG Yanpu;LIU Jun-an(Nanjing Center, China Geological Survey, Nanjing 210016, Jiangsu, China;The New Financial Group (Qingdao) Mineral Resources Co., Ltd., Qingdao 266061, Shandong, China)

机构地区：[1]中国地质调查局南京地质调查中心,江苏南京210016 [2]中融新大集团(青岛)矿产资源有限公司,山东青岛266061

出　　处：《地质通报》2017年第12期2213-2220,共8页Geological Bulletin of China

基　　金：中国地质调查局项目<海上丝绸之路大洋洲和南美洲矿产资源评价>(编号:DD20160110)

摘　　要：秘鲁首都利马至查拉400km沿海成矿带赋存多处铁、铜、金矿床,铜金矿床具有IOCG(铁氧化物)型,铁矿多为矽卡岩型。邦沟铁多金属矿规模巨大,矿床位于西科迪勒拉山西部边缘的伊卡-纳斯卡拗陷附近。矿床类型既有矽卡岩特征,也具有IOCG特点。总结矿床地质特征认为,邦沟铁和多金属矿矿化存在同期不同阶段的特点,铁矿化发生在第一期,铜金硫化物矿化发生在第二期;铜金硫化物在空间上与主铁矿体异位,铜金矿有较大找矿潜力。From Lima,the capital of Peru,to Chala City,there is a400km long mineralization zone along the Pacific coast.In this zone,there are a number of iron,copper,gold deposits.The copper-gold deposits possess the special IOCG type characteristics,whereas the iron deposits are mainly of skarn type.Pongo is a huge iron deposit.The deposit is located in the Western Cordillera near the western edge of the depression of ICA to Nascar.The deposit is accompanied by copper-gold mineralization.This deposit not only has skarn specialty but also has IOCG features.The authors summarized the geological factors of the deposit and indicated an excellent copper-gold potential.It is also pointed out that the main iron mineralization and the gold-copper sulfides are different in stage and space.

关 键 词：秘鲁邦沟铁矿 矽卡岩 铁氧化物-铜-金矿 矿化阶段 

分 类 号：P618.31[天文地球—矿床学]