| 南岭稀土花岗岩、钨锡花岗岩及其成矿作用的对比 |
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| 引用本文： | 华仁民 张文兰 顾晟彦 陈培荣. 南岭稀土花岗岩、钨锡花岗岩及其成矿作用的对比[J]. 岩石学报, 2007, 23(10): 2321-2328. |
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| 作者姓名： | 华仁民 张文兰 顾晟彦 陈培荣 |
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| 作者单位： | 华仁民（南京大学地球科学系,成矿作用研究国家重点实验室,南京,210093）;张文兰（南京大学地球科学系,成矿作用研究国家重点实验室,南京,210093）;顾晟彦（南京大学地球科学系,成矿作用研究国家重点实验室,南京,210093）;陈培荣（南京大学地球科学系,成矿作用研究国家重点实验室,南京,210093） |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 南岭地区的钨锡和稀土矿床都与花岗岩类有直接成因联系,但二者的成矿作用有许多不同之处.钨锡是典型的热液成矿,而稀土则主要形成于风化作用.随着花岗岩类的分异演化,岩石中的W、Sn等元素含量逐渐增加,因此钨锡等矿床主要与高度分异演化的晚阶段小岩体有关;但是稀土的表现与钨锡不同,由于花岗岩类的分异演化导致稀土栽体黑云母及许多副矿物的减少,因此稀土元素含量在晚阶段岩体中反而降低.赣南的五里亭-大吉山岩体、桂东北的花山-姑婆山岩体等提供了很好的范例.因此,南岭地区与风化壳型稀土矿床有关的岩石主要有印支期准铝质花岗岩,燕山期A型花岗岩,燕山中-晚期黑云母二长花岗岩等.
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| 关 键 词： | 稀土 钨锡 风化壳型稀土矿床 花岗岩 南岭 |
| 文章编号： | 1000-0569/2007/023(10)-2321-28 |
| 修稿时间： | 2007-07-27 |
Comparison between REE granite and W-Sn granite in the Nanling region, South China, and their mineralizations |
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| Comparison between REE granite and W-Sn granite in the Nanling region, South China, and their mineralizations[J]. Acta Petrologica Sinica, 2007, 23(10): 2321-2328. |
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| Authors: | HUA RenMin ZHANG WenLan GU ShengYan CHEN PeiRong |
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| Abstract: | W-Sn deposits and REE deposits are extensively distributed in the Nanling region,South China. They are both genetically closely related to granitoids but have many differences in mineralization.W-Sn deposits are typical hydrothermal ones, whereas REE deposits in the region mainly formed by surface weathering.With differentiation and evolution of granitoids,the contents of W and Sn increased gradually;so W-Sn deposits are mainly associated with highly differentiated and evolved,late-stage small granite intrusions.However,REE have different behaviors from W and Sn.Because the differentiation and evolution of granitoids resulted in the decrease of REE carrier minerals such as biotite and many accessory minerals,the REE content in the granite intrusions decreased in the late stage instead.Good examples are given by the Wuliting-Dajishan granite in southern Jiangxi and Huashan-Guposhan granite in northeastern Guangxi.The major granitoids related to weathered-crust type REE deposits include Indosinian metaluminous granites, Yanshanian A-type granite and mid-late Yanshanian biotite monzogranite. |
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| Keywords: | REE W-Sn Weathered-crust type REE deposits Granitoids Nanling |
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