黑龙江鹿鸣钼矿床成矿岩体岩石地球化学特征
Geochemical Characteristics of Mineralization Rock from the Luming Molybdenum Deposit in Heilongjiang Province
查看参考文献10篇
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文摘
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鹿鸣钼矿床产于燕山早期二长花岗岩-花岗斑岩岩体中,对其岩石学和地球化学特征进行分析.结果表明:SiO_2质量分数在63.84%~71.32%之间,全碱质量分数为6.9%~8.4%,w(K_2O)/w(Na_2O)平均为1.37.岩体大部分属于偏铝-过铝质高钾钙碱性花岗岩.稀土元素总量值高,轻稀土富集,稀土分配模式为右倾曲线,同时Eu出现弱到中等程度的亏损.研究认为与成矿有关的二长花岗岩-花岗斑岩的岩浆属壳源岩浆演化形成的A_2型花岗岩岩石组合,其形成背景应属于陆-陆碰撞之后的伸展体系. |
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其他语种文摘
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The Luming molybdenum deposit occurs in early Yanshanian pluton consisting of adamellite and granite porphyry. The data of petrography and geochemistry show that the SiO_2 content varies from 63.84% to 71.32%, total alkali content varies from 6.9% to 8.4%, and w(K_2O)/w(Na_2O) has an average value of 1.37. Most of the rocks belong to metaluminous-peraluminous high potassium calc-allkaline granite. The rocks have high total REE content. LREE is relatively enriched. The chondrite-nomalized REE patterns show that the curves of REE are right dip types with slightly-moderate negative Eu anomalies. The adamellite and granite porphyry magma which relates to mineralization belong to A_2 type granite formed by the crust material source magma evolution. It is inferred that the pluton was formed by the conversion from a post-collisional environment to an extensional environment. |
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来源
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东北大学学报. 自然科学版
,2014,35(7):1039-1041,1046 【核心库】
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关键词
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鹿鸣钼矿
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A_2型花岗岩
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地球化学
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燕山早期
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地址
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1.
东北大学资源与土木工程学院, 辽宁, 沈阳, 110819
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沈阳地质矿产研究所, 辽宁, 沈阳, 110034
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-3026 |
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学科
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地质学 |
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基金
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国家教育部高等学校博士学科点专项科研基金
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中国地质调查局省部合作项目
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中国地质调查局矿产地质调查项目
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文献收藏号
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CSCD:5192523
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参考文献 共
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