甘肃白银厂折腰山矿床成矿规律及深部找矿研究  

RESEARCHES ON METALLOGENETIC REGULARITY AND DEEP-SEATED ORE-HUNTING IN ZHEYAOSHAN DEPOSIT, BAIYIN ORE FIELD, GANSU

作　　者：彭礼贵[1] 李向民 任有祥 王海臣[2] 李玉忠[2] 

机构地区：[1]地质矿产部西安地质矿产研究所,710054 [2]白银有色金属公司深部铜矿

出　　处：《西北地质科学》1998年第1期1-51,共51页Northwest Geoscience

摘　　要：北祁连山是我国及世界上最重要的块状硫化物矿床成矿省之一。折腰山矿床是白银矿田内的大型Cu－Zn矿床。目前，整个白银矿田遇到了铜矿产供需矛盾突出、资源濒临枯竭的困境。本课题正是在这一严峻形势下开展了为期两年的科技找矿研究。两年来，由于课题承担者在课题实施过程中贯彻了正确的成矿与找矿学术思想，明确了找矿研究的主攻方向，狠抓了主攻方向中的研究主攻点和主攻关键，从而取得了诸多找矿和地质成果，现择其要者列述于后。1．在矿床深部1535m水平中段下沿主巷道北侧975线发现一富Cu工业矿体。该工业矿体之发现是继80年代中期深部铜矿地测科李玉忠高工等发现41号等工业矿体以来又一新的找矿成果。鉴于该工业矿体并非像41号等矿体位于已知工业矿体群中或附近，而是处于以往找矿空白地段，故其具有进一步找矿的重要指示意义。2．进一步肯定了北风井1535～1475m水平中段间小型矿体群地段寻找工业矿体的价值。包括深部铜矿地测科所施工百米水平钻验证工程在内的研究表明，该地段是一个宽在45m、控制长愈百米、由5个1～5m厚矿体组成的小型矿体群．成矿蚀变岩特征、矿石结构构造、成分分析，以及矿体类型研究显示，该地段具有扩大找矿的潜在前景。3．在成矿构造系统分析、成矿蚀变岩筒特征研究。North Qilian Mis. are one of the most important metallogenetic provinces of massive sulfide ore deposits both in china and in the world. These ore deposits of Baiyin ore field in eastern portion of North Qilian Mis. within Gansu Province are present like bright pearls in the metallogenctic province and the Zheyaoshan large-scale Cu-Zn deposit in Baiyin ore field lies just in the site of high light on the pearl. For 45 years since the mid of 1950s,Zheyaoshan deposit underwent three stages, the beginning stage of exploration in success,the opencast mining stage and the recently deep-seated mining stage, which have been not only devoting million tons of copper metal to the country but also accumulating great numbers of rarely integrated and complete data on exploration, opencast mining and deep-seated mining of the ore deposit for geologists. Nowadays, the source of Cu ores in Baiyin Mine has been almost exhausted out and Baiyin Nonferrous Metal Co. lands itself in a predicament. It is just under the severe circumstances that the project of ore-hunting research comes into operation and has carried out for two years.During the two-year period, researchers of the project put great emphasis on the key points and key problems, which have been approached in a right way and guided by a right academic thought on ore-hunting, therefore the project has made great progress in both geology and ore-prospecting.Now the major results have been obtained as follows.1. A Cu-rich industrial ore body has been found on 1 535 m level in the depth of Zheyaoshan deposit on north side of the northern main workings at line 975. The newlyfound ore body is a new breakthrough after the No. 41 Ore body being found in mid of 1980s by senior engineer Li Yuzhong, the Geological Surveying Branch of Deep-seated Copper Mine. It is of important significance for further prospecting that the newly-found ore body occurs in an unknown blank area, but the No. 41 ore body and others appeared within or around a group of known ore bodies.2. It is further conf

关 键 词：银矿床 铜矿床 成矿规律 深部找矿 甘肃 

分 类 号：P618.520.5[天文地球—矿床学] P618.510.5[天文地球—地质学]