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The study aims to characterize altered wall rocks and molybdenite ores using terahertz time-domain spectroscopy to support deep prospecting.

May 9, 2026GeosciencesOpen Access

Terahertz Time-Domain Spectroscopy in Molybdenum Exploration: A Case Study of the Dengshang Deposit, North China Craton

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The study aims to characterize altered wall rocks and molybdenite ores using terahertz time-domain spectroscopy to support deep prospecting.
Field surveys and petrographic analysis are integrated with terahertz time-domain spectroscopy.
Alteration zones, specifically potassic and propylitic, are examined around the rhyolite porphyry intrusion.
Spectral characteristics are analyzed to understand relationships between alteration and mineralization.
Clear spatial gradient from potassic to propylitic alteration zones is observed.
Potassic-altered wall rocks show a negative correlation with THz amplitude and a positive correlation with the absorption coefficient and refractive index.
Distinctive spectral signatures of propylitically altered rocks can help delineate ore body boundaries.

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Randomized trial reveals relationships between spectral characteristics and mineralization in North China Craton.

Li et al. (2026) studied this question.

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