| 赣中南产铀钨系列花岗岩岩石化学数值多元判别及地质效果 |
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| 引用本文： | 李邦达.赣中南产铀钨系列花岗岩岩石化学数值多元判别及地质效果[J].铀矿地质,1986(2). |
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| 作者姓名： | 李邦达 |
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| 摘 要： | 由于赣中南及邻区地壳初始物质应分的不均匀性而导致的地壳重熔型花岗岩岩石化学成分和成矿元素的差异,以及U、W-Sn、TR、Nb-Ta等与壳型花岗岩有关的成矿元素地球化学性质的差异,决定了这些元素的不共生性,而各自有其成矿专属岩体。按成矿专属性可将本区燕山期花岗岩划分为产U系列花岗岩和产TR、W-Sn、Nb-Ta系列花岗岩。二系列岩体的岩石化学成分和副矿物组合有明显的差别。据此建立的岩石化学数值多元线性判别函数式能判别二系列岩体;对产W-Sn、TR、Nb-Ta系列岩体能进行二级判别,同时能判别壳源型花岗质侵出岩的产矿性,以及区分加里东期交代花岗岩及混熔过渡型Cu花岗若。
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| 关 键 词： | 产铀钨系列 多元差别 成矿专属性 |
THE MULTIPLE DISCRIMINATION ANALYSIS OF PETROCHEMICAL DATA FROM THE GRANITOID SERIES HOSTING URANIUM AND TUNGSTEN MINERALIZATION, MID-SOUTH JIANGXI PROVINCE, AND IT'S GEOLOGICAL SIGNIFICANCE |
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| Li Bangda.THE MULTIPLE DISCRIMINATION ANALYSIS OF PETROCHEMICAL DATA FROM THE GRANITOID SERIES HOSTING URANIUM AND TUNGSTEN MINERALIZATION, MID-SOUTH JIANGXI PROVINCE, AND IT''''S GEOLOGICAL SIGNIFICANCE[J].Uranium Geology,1986(2). |
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| Authors: | Li Bangda |
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| Abstract: | As initial material compositions of the crust in mid-south Jiangxi province and it's neighbouring areas have a nonhomogeneity, the remelting-type granitoids in these regions show differences in their petrochemical compositions and ore-forming elements; aud as a result of diversity in geochemical behaviors between the ore-forming elements,such as U,W-Sn, TR and Nb-Ta related to the crust-type granitoid, these elements must be in disassociation apart from each other, having their different ore-specialized granitic bodies. According to diverse ore-specialization the granitoids in the region can be classified into two granitoid series. i.e.U-forming series and W-Sn, TR,NbTa-forming series. These two granitoid series have apparent difference in their petrochemical compositions and accessory mineral assemblages. Thus,the multiple discriminant linear equation of petrochemical data can be successfully used in order to distinguish these two granitoid series. For the W-Sn, TR, Nb-Ta-forming granitoid series,a second-step discrimination can also be used. Besides, this linear equation is available for discriminating the ore-forming character of the crust-type granitic intrusion, and also for distinguishing the metasomatism-type granitoid of Caledonian age, and the Cu-forming granitoid of tran sitional mixmelting-type. |
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| Keywords: | Uranium and Tungsten mineralization Multiple discrimination analysis Diverse ore-specialization |
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