| 光谱学与光谱分析 |
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| NIR and XRD Analysis of Drill-Hole Samples From Zhamuaobao Iron-Graphite Deposit, Inner Mongolia |
| LI Ying-kui, CAO Jian-jin*, WU Zheng-quan, DAI Dong-le, LIN Zu-xu |
| Department of Earth Sciences，Sun Yat-sen University，Guangdong Key Laboratory of Geological Process and Mineral Resources Exploration，Guangzhou 510275，China |
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Abstract The author analyzed the 4202 drill-hole samples from Zhamuaobao iron-graphite deposit by using near infrared spectroscopy(NIR) and X-ray diffraction(XRD) measuring and testing techniques, and then compared and summarized the results of two kinds of testing technology. The results indicate that some difference of the mineral composition exists among different layers, the lithology from upper to deeper is the clay gravel layer of tertiary and quaternary, mudstone, mica quartz schist, quartz actinolite scarn, skarnization marble, iron ore deposits, graphite deposits and mica quartz schist. The petrogenesis in different depth also shows difference, which may indicate the geological characteristic to some extent. The samples had mainly undergone such processes as oxidization, carbonation, chloritization and skarn alteration. The research results can not only improve the geological feature of the mining area, but also have great importance in ore exploration, mining, mineral processing and so on. What’s more, as XRD can provide preliminary information about the mineral composition, NIR can make further judgement on the existence of the minerals. The research integrated the advantages of both NIR and XRD measuring and testing techniques, put forward a method with two kinds of modern testing technology combined with each other, which may improve the accuracy of the mineral composition identification. In the meantime, the NIR will be more wildly used in geography on the basis of mineral spectroscopy.
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Received: 2013-12-27
Accepted: 2014-03-25
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Corresponding Authors:
CAO Jian-jin
E-mail: eescjj@mail.sysu.edu.cn
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