相山矿田居隆庵铀矿床成矿物理化学条件分析  

Metallogenic physica-chemical conditions analysis of Julong′an uranium deoposit in Xiangshan Orefield

作　　者：吴柏林[1] 周鲁民[2] 

机构地区：[1]西北大学地质学系/大陆动力学教育部重点实验室,陕西西安710069 [2]东华理工学院地质学系,江西抚州344000

出　　处：《西北大学学报（自然科学版）》2006年第1期119-124,共6页Journal of Northwest University（Natural Science Edition）

基　　金：国家重点基础研究发展规划基金资助项目(2003CB214607);核工业科研基金资助项目(49.5.1)

摘　　要：目的了解相山矿田居隆庵铀矿床成矿物理化学性质及其背景。方法应用岩石化学及铷、锶、硫、氧等同位素地质及包裹体研究方法。结果含矿主岩碎斑熔岩岩石形成的初始岩浆起源于上地幔,在上升过程中混染并重熔了地壳组分;成矿热液起源于深部岩浆热液,在沿构造上升过程中混合了浅部地下水溶液,形成了一种混合热液。结论成矿热液物理化学性质为弱酸、弱还原性的中低温热液,成岩成矿物质既来源于深部(上地幔),又有浅部物质的混合。Aim To study metallogenic physica-chemical conditions and background of Julongan uranium deoposit. Methods Through the methods of petrochemistry and Rb, St, O,S isotope geology and inclusion research. Results The primitive magma foring brocken porphyrotope lava originated in upper-mantle and hybridized and remelted upper-crust component. The mineralizing fluid originates from magma hydrothermal solution, mixingin underground water, and formed a kind of mixing hydrothermal solution. Conclusion The physical-chemical properties of mineralizing fluid is a kind of middle-lower temperature hydrothermal solution with weak-acid and weak-reduction. The compoments forming rock and ore come from upper-mantle and earth-crust.

关 键 词：相山矿田 成矿物理化学条件 成矿热液 包裹体 同位素 

分 类 号：P619.14[天文地球—矿床学]