CAJ | 학술논문

通过系统研究与成矿关系密切的莲花山花岗岩以及钨矿脉、云英岩和旁侧花岗岩的稀土元素地球化学特征，并进行对比分析，探讨粤北石人嶂钨矿床的成矿环境与成矿物质来源。研究表明，面型云英岩与脉侧云英岩以及相关的两类花岗岩的稀土元素组成存在明显差异，具有不同的物质来源，显示两期岩浆侵入与热液活动叠加特点；深部3种花岗岩及其脉侧云英岩的稀土配分模式很相似，表明具有相同的物质与热液来源；隐伏花岗岩体从浅部到深部，稀土总量、δEu值逐渐变小，显示岩浆岩结晶分异程度逐渐增强，为钨矿床形成提供了成矿物质来源；云英岩与花岗岩的稀土配分模式具有一定相似性，都是轻稀土富集，强烈铕亏损，而石英脉大多呈铕富集，相对富集轻稀土；随着成矿时间的推移，成矿环境由还原到相对氧化。因此，石人嶂钨矿床成矿热液与晚期岩浆热液具有相似性和继承性，成矿物质来源除了深部的白云母花岗岩，部分可能来自上部地壳。
통과계통연구여성광관계밀절적연화산화강암이급오광맥、운영암화방측화강암적희토원소지구화학특정，병진행대비분석，탐토월북석인장오광상적성광배경여성광물질래원。연구표명，면형운영암여맥측운영암이급상관적량류화강암적희토원소조성존재명현차이，구유불동적물질래원，현시량기암장침입여열액활동첩가특점；심부3충화강암급기맥측운영암적희토배분모식흔상사，표명구유상동적물질여열액래원；은복화강암체종천부도심부，희토총량、δEu치축점변소，현시암장암결정분이정도축점증강，위오광상형성제공료성광물질래원；운영암여화강암적희토배분모식구유일정상사성，도시경희토부집，강렬유우손，이석영맥대다정유부집，상대부집경희토；수착성광시간적추이，성광배경유환원도상대양화。인차，석인장오광상성광열액여만기암장열액구유상사성화계승성，성광물질래원제료심부적백운모화강암，부분가능래자상부지각。
By systematically comparing REE geochemical characteristics of granite in Mt.Lianhuashan,tung-sten veins,greisen and side-granite which has close relationship with mineralization,the paper discussed the metallogenic environment and sources of Shirenzhang tungsten deposit in northern Guangdong.It has been shown that REE components of facial-type greisen,vein-side greisen and two types of related granite are obvious different.They have different material sources,which infer to two stages of magmatic intrusion and superim-posed hydrothermal activity.The REE patterns of three types of granite in the deep tungsten vein and its vein-side greisen are very similar,indicating the same substances and hydrothermal sources.ΣREE and δEu of the hidden granite body gradually increase from shallow to deep,showing that the degree of magmatic crystallization differentiation gradually decreased,providing mineral source for the formation of tungsten deposit.REE patterns of greisen and granite have certain similarities,LREE enrichment and a strong negative Eu anomaly.But most quartz veins have a positive Eu anomaly,enriched in LREE relatively.As mineralization time goes by,metallo-genic environment changes from the reducing to the relative oxidizing.Therefore,there are similarities and in-heritance between ore-forming hydrotherm of Shirenzhang tungsten deposits and late magmatic hydrotherm.A-bove all,these results suggested that the metallogenic material may be also partly from upper crust in addition to muscovite granite in the deep.