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Study on Raman Spectrum Characteristics of Pyrite in the Xishimen Gold Deposit in Lingshou,Hebei |
GUO Gui-juan1, ZHANG De-hui1*, LI Sheng-rong1, XIE Chao2, CUI Yue-ju2* |
1. School of Earth Sciences and Resources, China University of Geosciences,Beijing 100083,China
2. Key Laboratory of Earthquake Prediction,Institute of Earthquake Science,China Earthquake Administration,Beijing 100036,China |
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Abstract The gold-bearing pyrite samples in different production ranges and generations from the Xishimen quartz-vein gold deposit were investigated by micro-Raman spectroscopic measurement. The Raman stretching vibration frequency of two texture type was observed in gold-bearing pyrite: One was the stretching vibration frequency of Fe—[S2]2- within 338~343 cm-1; Another was the stretching vibration frequency of Au+—[S2]2- within 374~379 cm-1. Different production ranges and generations of pyrite had different Raman spectra characteristics: All the peaks shift of Au-bearing pyrite had large intensity, big changes and towards low-frequency due to the stretching vibration of Au+—[S2]2-; All the peaks shift of Au-poor pyrite had low intensity, small changes and towards high-frequency due to the stretching vibration of Fe—[S2]2-; The study showed that the main reason of the changes of the Raman spectral was gold-bearing, so the Raman spectral characteristics of gold-bearing pyrites can be used to evaluate gold-bearing properties and geological environment of gold deposits.
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Received: 2015-05-20
Accepted: 2015-11-29
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Corresponding Authors:
ZHANG De-hui, CUI Yue-ju
E-mail: cehuicuiyueju@126.com;zhdehui@cugb.edu.cn
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