| 平江瑚珮伟晶岩型铌钽矿床地质特征及成因 |
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| 引用本文： | 肖朝阳.平江瑚珮伟晶岩型铌钽矿床地质特征及成因[J].华南地质与矿产,2003(2):63-67. |
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| 作者姓名： | 肖朝阳 |
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| 作者单位： | 湖南省地质调查院湘东矿产地质调查所,湖南,浏阳,410323 |
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| 摘 要： | 矿床位于幕阜山花岗岩体南西缘与板溪群片岩接触带伟晶岩密集区。矿化伟晶岩墙大多受NEE向纵向节理控制，并位于幕阜山岩体的边缘。矿区内已发现7个矿体，它们通常呈脉状，延深约100m。矿石为花岗伟晶结构和条带状构造。含铌、钽的矿物主要包括铌铁矿、钽铁矿和绿柱石，它们主要分布于分异晚期的块体带中。地球化学和同位素研究表明，该矿床为—岩浆—交代伟晶岩型矿床，成因上与幕阜山花岗岩体有关。
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| 关 键 词： | 平江县 矿床成因 地质特征 瑚佩晶岩型铌钽矿床 地球化学 同位素研究 伟晶岩型矿床 |
| 文章编号： | 1007-3701(2003)02-0063-05 |
| 修稿时间： | 2003年2月20日 |
Characteristics and genesis of Hupei pegmatite Nb-Ta deposit in Pingjiang, Hunan |
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| XIAO Chao-yang.Characteristics and genesis of Hupei pegmatite Nb-Ta deposit in Pingjiang, Hunan[J].Geology and Mineral Resources of South China,2003(2):63-67. |
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| Authors: | XIAO Chao-yang |
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| Abstract: | The deposit located in the pegmatite compact districts of contact between southwest Mnfu mountain rock mass and schist of Banxi Group. The mineralized pegmatite dykes are mostly controlled by NEE-striked longitudinal joints and lie in the marginal facies of Mufu mountain rocks mass. Seven ore bodies have been found and are usually veined extending deeply about 100 m. Ores show pegmatoidal granitic taxture and banded structure. Nb- and Ta-bearing minerals are niobite, tantalite and beryl which are mainly distributed in the massive belts formed during late peroid of differentiation. The geochemical characteristics and isotope age suggest that the deposit is a magma-metasomatic pegmatite-type deposit relating genetically to Mufu mountain granitic mass. |
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| Keywords: | Na Ta deposit deposit genesis pegmatite Pingjiang county |
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