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| 大兴安岭中南段花岗岩中黑云母矿物学地球化学特征及成因意义 | |
| 引用本文： | 吕志成,李鹤年,刘丛强,刘家军,郝立波.大兴安岭中南段花岗岩中黑云母矿物学地球化学特征及成因意义[J].矿物岩石,2000,20(3):1-8. |
| 作者姓名： | 吕志成 李鹤年 刘丛强 刘家军 郝立波 |
| 作者单位： | 1. 中国科学院地球化学研究所矿床地球化学开放实验室,贵阳,550002;长春科技大学,长春,130026 2. 长春科技大学,长春,130026 3. 中国科学院地球化学研究所,贵阳,550002 4. 中国科学院地球化学研究所矿床地球化学开放实验室,贵阳,550002 |
| 基金项目： | 本文的研究得到教育部博士点基金项目(No.97018701)和国95攀登计划预选项目(95预39)的联合资助． |
| 摘 要： | 大兴安岭中南段花岗岩中黑云母的矿物学和地球化学特征研究表明，海西晚期花岗岩体黑云母Ｍｇ高Ｆｅ＾２＋低，Ｍｇ原子数〉０．６，Ｆｅ＾２＋原子数〈１．１，而燕山期γ＾２－２５岩体黑云母Ｍｇ原子数〈０．６，Ｆｅ＾２＋原子数〉１．１，燕山晚期γ＾３－１５岩体黑云母Ｍｇ原子数〈０．４，Ｆｅ＾２＋原子数〉１．９，本区黑云母成分特征介于华南二成因系列之间，兼具二系列的某些特点，表明本区花岗岩的壳幔混源特点，本区南 |
| 关 键 词： | 黑云母 矿物学特征 地球化学特征 花岗岩 |
| 修稿时间： | 2000一01-18 |
MINERALOGICAL AND GEOCHEMICAL CHARACTERISTICS OF BIOTITE IN GRANITE IN SOUTH-MIDDLE SECTION OF THE GREAT XING'AN MOUNTAINS AND ITS GENETIC SIGNIFICANCE |
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| Lü Zhi-cheng,LI He-nian,LIU Cong-qing,LIU Jia-jun,HAO Li-bo.MINERALOGICAL AND GEOCHEMICAL CHARACTERISTICS OF BIOTITE IN GRANITE IN SOUTH-MIDDLE SECTION OF THE GREAT XING''AN MOUNTAINS AND ITS GENETIC SIGNIFICANCE[J].Journal of Mineralogy and Petrology,2000,20(3):1-8. | |
| Authors: | Lü Zhi-cheng LI He-nian LIU Cong-qing LIU Jia-jun HAO Li-bo |
| Abstract: | The mineralogical and geochemical studies of biotite occurring in the granite in the south middle part of the Great Xing'an Mountains, show that the biotite in the late Hercynian granite,is characterized by high content of Mg and low content of Fe 2 .While the biotite in the late middle Yenshanian granite are both characterized by high content of Fe 2 and low content of Mg. The chemical composition of biotite in the granite in the region is similar to the biotite in the Nanling granite series and to the biotite in the Middle low reaches of the Yangtze river granite series,and manifests the granite in the region is mantle crust mixing type. In the southern part of the region,the biotite in the late middle Yanshanian granite related to the W,Sn mineralization is rich in Si and Fe and poor in Mg.While in the northern part of the region,the content of SiO 2 in the biotite in the late middle Yanshanian granite related to the Cu,Pb,Zn mineralization is lower than the granite,and the contents of Cu,Pb,Zn are as much as 5~10 times higher than granite. |
| Keywords: | biotite mineralogical characteristics geochemical characteristics genetic significance south middle part of the Great Xing'an Mountains |
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