CAJ | 학술논문

四川拉拉铜矿是我国西南重要的大型铜矿,并且共(伴)生丰富的金-钼-钴-稀土-铁可供综合利用.系统的矿相学研究表明,矿石矿物主要为热液磁铁矿、黄铜矿、黄铁矿、白铁矿和辉钼矿;矿床围岩蚀变种类较多,主要有黑云母化、硅化、碳酸盐化、钠长石化、钾长石化、磷灰石化、阳起石化、萤石化等;矿石结构包括自形-半自形-它形晶粒结构、交代残余结构、包含结构和枝状结构,矿石构造包括浸染状构造、条带状构造、脉状-网脉状构造和角砾状构造;载铜矿物主要为黄铜矿,钴主要赋存于黄铁矿和白铁矿中.钼赋存于辉钼矿中,金主要以自然金或含银自然金形式赋存于黄铜矿、黄铁矿和叶碲铋矿中;磁铁矿中钛含量低,矿石中硫含量低,罕见铅锌硫化物矿物.因此,拉拉铜矿应属于典型的铁氧化物铜金矿床.
사천랍랍동광시아국서남중요적대형동광,병차공(반)생봉부적금-목-고-희토-철가공종합이용.계통적광상학연구표명,광석광물주요위열액자철광、황동광、황철광、백철광화휘목광;광상위암식변충류교다,주요유흑운모화、규화、탄산염화、납장석화、갑장석화、린회석화、양기석화、형석화등;광석결구포괄자형-반자형-타형정립결구、교대잔여결구、포함결구화지상결구,광석구조포괄침염상구조、조대상구조、맥상-망맥상구조화각력상구조;재동광물주요위황동광,고주요부존우황철광화백철광중.목부존우휘목광중,금주요이자연금혹함은자연금형식부존우황동광、황철광화협제필광중;자철광중태함량저,광석중류함량저,한견연자류화물광물.인차,랍랍동광응속우전형적철양화물동금광상.
The Lala copper deposit of Sichuan is one of the important large deposits in SW China not only for Cu,but also for considerable economic amount of Au-Mo-Co-REE-Fe. Systematic ore mineralogy research shows that ore minerals are mainly composed of hydrothermal magnetite,chalcopyrite and molybdenite. The wall-rock alterations include biotitization,silicification,carbonatization,albitization,potash feldspathization,apatitization,actinolitization,fluoritization,etc. The ores have euhedralsubhedral-allotriomorphic crystalline grained texture,metasomatic relict texture,poikilitic texture,and dendritic texture,and have disseminated,banded,vein-stockwork and breccia structures. Copper is mainly found in chalcopyrite,cobalt mainly in pyrite and marcasite,molybdenum mainly in molybdenite and gold mainly in chalcopyrite,pyrite and pilsenite as native or silverbering native gold. The contents of Ti in magnetite and S in ore are low,with a very small amount of Pb-Zn sulfide minerals. Consequently,the Lala copper deposit is a typical iron oxide-Cu-Au (IOCG) deposit.