CAJ | 학술논문

广东始兴良源铌钽铷钨多金属矿床是近年来中国地质调查局在南岭东段地区实施钨多金属矿调查评价中找到的具有大型远景的铌钽铷钨多金属矿床。最新成果显示该矿床主要有五种矿化类型：云英岩型铌钽铷钨多金属矿、白云母化钠长石花岗岩型铌钽铷钨多金属矿、石英脉型钨矿、破碎蚀变岩型钨锡多金属矿和矽卡岩型白钨矿,且以白云母化钠长石花岗岩型铌钽铷钨多金属矿潜力最大。矿区含矿花岗岩具明显分异演化特征,自上向下为：似斑状花岗岩—中细粒黑云母花岗岩—中细粒二云母钠长石花岗岩—中细粒白云母化钠长石花岗岩—云英岩的分异演化系列;含矿花岗岩蚀变分带清晰,自上向下为：白云母化、绿泥石化和钾长石化三带,矿体以云英岩、细粒白云母化钠长石花岗岩为主,石英脉次之,矿石矿物主要有黑钨矿、白钨矿、锡石、辉钼矿、钨铅矿、钼铅矿、砷铋矿、辉铋矿、辉锑矿、褐钇铌矿、铌钽矿、方铅矿、闪锌矿、黄铜矿、黄铁矿、铀钍矿、白云母等;初步研究表明广东始兴良源铌钽铷钨多金属矿体可能为深部含矿岩浆经分异演化形成,矿床具有品位稳定、规模大的特点,成矿元素复杂,主要为Nb-Ta-Rb-W-Mo-Sn-Bi组合,并富含Be、稀土、Ag等。该矿床的发现不仅填补了南岭东段地区找矿新突破,而且对整个南岭乃至华南地区铌钽铷钨多金属矿找矿具有重要的指导作用。
엄동시흥량원니단여오다금속광상시근년래중국지질조사국재남령동단지구실시오다금속광조사평개중조도적구유대형원경적니단여오다금속광상。최신성과현시해광상주요유오충광화류형：운영암형니단여오다금속광、백운모화납장석화강암형니단여오다금속광、석영맥형오광、파쇄식변암형오석다금속광화석잡암형백오광,차이백운모화납장석화강암형니단여오다금속광잠력최대。광구함광화강암구명현분이연화특정,자상향하위：사반상화강암—중세립흑운모화강암—중세립이운모납장석화강암—중세립백운모화납장석화강암—운영암적분이연화계렬;함광화강암식변분대청석,자상향하위：백운모화、록니석화화갑장석화삼대,광체이운영암、세립백운모화납장석화강암위주,석영맥차지,광석광물주요유흑오광、백오광、석석、휘목광、오연광、목연광、신필광、휘필광、휘제광、갈을니광、니단광、방연광、섬자광、황동광、황철광、유토광、백운모등;초보연구표명엄동시흥량원니단여오다금속광체가능위심부함광암장경분이연화형성,광상구유품위은정、규모대적특점,성광원소복잡,주요위Nb-Ta-Rb-W-Mo-Sn-Bi조합,병부함Be、희토、Ag등。해광상적발현불부전보료남령동단지구조광신돌파,이차대정개남령내지화남지구니단여오다금속광조광구유중요적지도작용。
The Liangyuan Nb-Ta-Rb-W polymetallic deposit in Shixing county,Guangdong Province,a deposit with a prospect of large scale,was found during the new-round investigation of tungsten polymetallic ores in the eastern Nanling mineralization zones deployed by China Geological Survey(CGS)in recent years.The new results show that five mineralized types can be recognized in the deposit,namely,greisen-type niobium-tantalum-rubidium-tungsten polymetallic ore,muscovitization albite granite-type niobium-tantalum-tungsten polymetallic ore,quartz vein-type tungsten ore,fractured belt alterated rock-type tungsten tin polymetallic ore and skarn-type scheelite,among them,muscovitization albite granite-type niobium-tantalum-tungsten polymetallic deposit shows the most prospective potential of exploration in this area.From the top level downwards to the deeper of the ore-bearing granite,the following differentiation evolution series are successively observed: porphyritic granite,medium-fine grained biotite granite,medium-fine grained two-mica albite granite,medium-fine grained muscovitization albite granite and greisen.In addition,alteration zoning,including muscovitization,chloritization and potassic alteration,is evidently observed in the ore-bearing granite.The ore bodies mainly occur in greisens,and fine grained muscovitization albite granites,and secondarily in quartz veins.The major ore minerals are scheelite,cassiterite,wolframite,molybdenite,bismuth,stibnite,fergusonite,fluorine-tantalum minerals,columbotantalite,galena,sphalerite,chalcopyrite and pyrite.A preliminary study indicates that the Nb-Ta-Rb-W-polymetallic ore bodies might be originated from the differentiation of deep-seated ore-bearing magma.The Liangyuan Nb-Ta-Rb-W-polymetallic deposit is characteristic of stable-grade, large scale and complex ore-forming elements with a Nb-Ta-Rb-W-Mo-Sn-Bi assemblage,enriched in Be、REE、Ag.The discovery of Liangyuan deposit is not only a breakthrough of prospecting in the eastern Nanling region,but also an important guide in Nb-Ta-Rb-W-polymetallic ore prospecting work in the whole Nanling and even South China.