本文選題：阿合奇地區(qū)　切入點：色帕巴衣鉛礦床　出處：《地質(zhì)科技情報》2017年02期

【摘要】：新疆色帕巴衣鉛礦床位于塔里木板塊西北緣柯坪鉛鋅礦帶內(nèi),發(fā)育雞窩狀礦化,賦存于丘里塔格組構(gòu)造白云巖角礫和巖溶白云巖角礫中,圍巖蝕變較弱。礦石呈角礫狀構(gòu)造,以方鉛礦為主的金屬礦物充填于白云巖角礫間。礦化白云巖微量元素富Cd、Sb、Mo,貧In,稀土元素總量較低、Eu負異常明顯,這些特征揭示成礦流體為還原性的非巖漿熱液。方鉛礦的δ34S集中在4.5‰~7.5‰之間,相對較大且變化范圍較小,鉛同位素~(206)Pb/~(204)Pb=17.436~17.568,~(207)Pb/~(204)Pb=15.528~15.592,~(208)Pb/~(204)Pb=37.800~38.008,表明成礦流體可能由分別來自硫酸鹽地層和古老結(jié)晶基底的兩類不同性質(zhì)流體混合形成。這些特征揭示色帕巴衣礦床可能為與盆地流體活動有關(guān)的后生層控MVT型鉛鋅礦床,主要控礦因素為構(gòu)造裂隙及角礫巖系統(tǒng)。
[Abstract]:Located in the Keping lead-zinc ore belt on the northwest margin of the Tarim plate, the Shepabayi lead deposit in Xinjiang developed nest-shaped mineralization, which occurred in the structural dolomite breccia and karst dolomite breccia of the Qiulitag formation, and the alteration of surrounding rock was relatively weak.The ore is a breccia structure with galena-dominated metallic mineral filling between dolomite boulders.The trace elements of mineralized dolomite are rich in CD ~ (2 +) SB ~ (+) Mo, poor in in, and the total amount of rare earth elements is lower and EU negative anomalies are obvious. These characteristics indicate that the ore-forming fluid is a reductive non-magmatic hydrothermal solution.鏂歸搮鐭跨殑未34S闆嗕腑鍦，

本文編號：1713161