老挝爬奔金矿金矿化及其围岩蚀变过程元素迁移
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摘要
根据水岩反应理论,通过对矿化蚀变岩与围岩的对比分析,对爬奔金矿围岩在矿化蚀变过程中的元素迁移规律进行了分析研究,结果表明在金矿化热液蚀变过程中,不同元素带入带出程度不同,具有一定的迁移规律,主要带入元素为Au、Hg、As、W,元素W的带入说明含矿热液可能与深部岩浆有关,地球化学W异常为后期找矿提供了新的指示性线索。
According to the water-rock reaction theory, through the comprative analysis of surrouding rocks and altered rocks, as well as the elements migrations study covers the phyllite process of mineralizatiom and alteration in the Phabon gold deposit.It is shown that various elements are carried in and out at different degrees in the process of gold mineralization and alteration,the element migration is obvious.The main elements is Au、Hg、As、W which have been brought into wall-rock. Element W maybe illustrate that hydrothermal fluids may be associated with deep magma.we were used to ignore W anomaly. After this study, we know that anomaly W is closely related to the ore-bearing hydrothermal fluid, which provides new indicator clues for the later geological exploration.
According to the water-rock reaction theory, through the comprative analysis of surrouding rocks and altered rocks, as well as the elements migrations study covers the phyllite process of mineralizatiom and alteration in the Phabon gold deposit.It is shown that various elements are carried in and out at different degrees in the process of gold mineralization and alteration,the element migration is obvious.The main elements is Au、Hg、As、W which have been brought into wall-rock. Element W maybe illustrate that hydrothermal fluids may be associated with deep magma.we were used to ignore W anomaly. After this study, we know that anomaly W is closely related to the ore-bearing hydrothermal fluid, which provides new indicator clues for the later geological exploration.
引文
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[2]童文辉,杨海林,董振.老挝琅勃拉邦省巴乌县帕奔金矿矿床地质特征及成矿作用过程分析[J].矿产与地质,2015,29(4):458-461.
[3]翁海蛟,孔凡乾,韦龙明,等.八卦庙金矿化及其围岩蚀变过程的元素迁移[J].桂林理工大学学报,2015,35(4):721-726.
[4]史老虎,薛兰花,孙宏岩.老挝爬奔金矿围岩蚀变特征及其与金矿化的关系[J].地质调查与研究,2016,39(3):184-190.
[5]刘禧超,张瑞华,车路宽.老挝琅勃拉邦省爬奔矿区原生金矿床的地质特征及找矿方向[J].地质找矿论丛,2010,25(2):171-176.
[6]张瑞华,刘禧超,付方建,等.老挝琅勃拉邦省巴乌县爬奔村金矿构造控矿规律及找矿区段研究[R].天津华北地质勘查局地质研究所,2009.
[7]Kerrick D M.Al2Si O5-bearing segregation in the Lepontine Alps,Switzerland:Aluminum mobility in metapelittes[J].Geology,1988,16:636-640.
[8]Giere R.Zirconolite,allanite and hoegbomite in a marble skarn from the Bergell contact aureoles:Implictions for mobility of Ti,Zr,and REE[J].Contributions to Mineralogy and Petrology,1986,93:459-470.
[9]邓海琳,涂光炽,李朝阳,等.地球化学开放系统的质量平衡:I.理论[J].矿物学报,1999,19(2):121-131.