| 江西省广丰县李家膨润土矿床成因及找矿标志 |
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| 引用本文： | 刘友华,李康东,毛林兴.江西省广丰县李家膨润土矿床成因及找矿标志[J].资源调查与环境,2011,32(1). |
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| 作者姓名： | 刘友华 李康东 毛林兴 |
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| 作者单位： | 1. 江西省地质矿产勘查开发局赣东北大队,江西上饶,334000
2. 江西应用技术职业学院,江西赣州,341000 |
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| 摘 要： | 广丰县李家膨润土矿床赋存于白垩系上统南雄组第二岩性段酸性火山岩的顶底部.膨润土的主要矿物成分为蒙脱石,矿石结构构造与成矿原岩有关.矿石化学成分与酸性熔岩相近,矿体形态及空问分布受酸性熔岩流相带的控制.因此认为,膨润土矿床成矿原岩为酸性玻质熔岩,矿床是由酸性玻璃质熔岩经水解脱玻化而形成,其成因类型为风化淋滤蚀变岩型矿床.膨润土可自然改型,由原来的钠基膨润土改型成钙基膨润土和偏镁的钙基膨润土.对时代较新的酸性火山岩,在玻质熔岩发育处都有可能找到有利用价值的膨润土矿.由于膨润土常由珍珠岩、沸石脱玻化形成,三者常共生出现,是很好的找矿标志.
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| 关 键 词： | 膨润土 酸性熔岩 蒙脱石 成因 找矿标志 广丰 |
Genesis and prospecting indicator of bentonite deposit in Lijia area,Guangfeng County,Jiangxi Province |
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| LIU You-hua,LI Kang-dong,MAO Lin-xing.Genesis and prospecting indicator of bentonite deposit in Lijia area,Guangfeng County,Jiangxi Province[J].Resources Survey & Environment,2011,32(1). |
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| Authors: | LIU You-hua LI Kang-dong MAO Lin-xing |
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| Affiliation: | LIU You-hua1,LI Kang-dong1,MAO Lin-xing2(1.Jiangxi Province,Jiangxi Bureau of Geology and Mineral Exploration and Development of Northeast Brigade Jiangxi Province Shangrao,334000,China,2.Jiangxi Vocational College of Applied Technology,Jiangxi Province Ganzhou,341000,China) |
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| Abstract: | The bentonite deposit in Lijia area,Guangfeng county,Jiangxi province,is mainly occurred at the top and bottom of the second lithological layer of acid volcanic rocks which used to be defined as Nanxiong group,upper-Cretaceous.The main mineral composition of bentonite is montmorillonite,the texture and structure of ores are related with primary rocks.The chemical composition of ores is similar to that of acid lava,the shape and space distribution of the orebodies are controlled by acid lava flow facies belt... |
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| Keywords: | bentonite acid lava montmorillonite genesis ore-prospecting indicator Guangfeng |
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