短波红外光谱技术在西藏尼木地区岗讲斑岩铜-钼矿床中的应用

田丰; 冷成彪; 张兴春; 田振东; 张伟; 郭剑衡

doi:10.3799/dqkx.2018.373

Volume 44 Issue 6

Jun. 2019

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Article Navigation > Earth Science > 2019 > 44(6): 2143-2154

Tian Feng, Leng Chengbiao, Zhang Xingchun, Tian Zhendong, Zhang Wei, Guo Jianheng, 2019. Application of Short-Wave Infrared Spectroscopy in Gangjiang Porphyry Cu-Mo Deposit in Nimu Ore Field, Tibet. Earth Science, 44(6): 2143-2154. doi: 10.3799/dqkx.2018.373

Citation:

Tian Feng, Leng Chengbiao, Zhang Xingchun, Tian Zhendong, Zhang Wei, Guo Jianheng, 2019. Application of Short-Wave Infrared Spectroscopy in Gangjiang Porphyry Cu-Mo Deposit in Nimu Ore Field, Tibet. Earth Science, 44(6): 2143-2154. doi: 10.3799/dqkx.2018.373

Citation:

Tian Feng, Leng Chengbiao, Zhang Xingchun, Tian Zhendong, Zhang Wei, Guo Jianheng, 2019. Application of Short-Wave Infrared Spectroscopy in Gangjiang Porphyry Cu-Mo Deposit in Nimu Ore Field, Tibet. Earth Science, 44(6): 2143-2154. doi: 10.3799/dqkx.2018.373

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Application of Short-Wave Infrared Spectroscopy in Gangjiang Porphyry Cu-Mo Deposit in Nimu Ore Field, Tibet

doi: 10.3799/dqkx.2018.373

1.
State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry Chinese Academy of Sciences, Guiyang 550081, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2018-09-28
Publish Date: 2019-06-15

Abstract

Abstract

In order to reveal the alteration and mineralization structure of the Gangjiang porphyry copper-molybdenum deposit, the short-wave infrared spectroscopy (SWIR) technique was systematically used to analyze the four drill-holes in the typical section of the deposit.Five types of altered mineral groups were detected, i.e.sericite, kaolinite, chlorite, sulphate and carbonate.Short wave infrared spectroscopy results of sericite show that there is a greater illite crystallinity (≥ 1.5) and a smaller sericite Al-OH absorption position (≤ 2 205 nm) towards the ore body.However, the value of illite crystallinity and sericite Al-OH absorption position distal the ore body are 0.8-1.2 and 2 207-2 209 nm, respectively.In addition, the iron oxide intensity value is synchronized oxidized ore body.It is indicated that these characteristic parameters of short-wave infrared spectroscopy are helpful to the understanding of the alteration and mineralization structure of the Gangjiang porphyry Cu-Mo deposit, which may effectively restrict the ore-forming fluid condition and provide a potential prospecting indicator for the target mine and other similar mining areas.
- geology,
- wall rock alteration,
- sericite,
- short-wave infrared spectroscopy (SWIR),
- Gangjiang porphyry Cu-Mo deposit,
- deposits

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References(42)

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