Insights into a Mineral Resource Chlorite Mica Carbonate Schist by Terahertz Spectroscopy Technology

Abstract

Nowadays, the mineral resources formed by geological processes have been effectively utilized with the boom exploration of novel technologies. Traditional analytical methods, such as X-ray Fluorescence, X-ray diffraction, and Scanning electron microscopy, remain the commonly used approaches for resource detection. However, recent accelerations in terahertz component progress have promoted researchers to discover more potential technologies in mineral resource exploration. In this article, the various porosities and calcination products of Chlorite mica carbonate schist, a mineral resource and potent medicine, are detected using the terahertz time–domain spectroscopy. The terahertz constant measurement of Chlorite mica carbonate schist tablets including the amplitude and phase values was carried out. After Fourier transforms, notable differences of absorption coefficients and refractive index are observed from these experimental samples, which have compelling indications to quantitatively analyze the pore conditions and pyrolytic properties of mineral resources. This active research has vital implications for the rock reservoir properties analysis and mineral energy utilization. It is also identified that terahertz time–domain spectroscopy can be considered as a promising method for the qualitative, reliable, and efficient detection of mineral resources.

Water Recycling in the Deep Earth: Insights From Integrated μ‐XRF, THz‐TDS Spectroscopy, TG, and DCS of High‐Pressure Granulite

“…Detailed amplitude, absorption coefficient, and refractive index calibration procedures followed those described in Yang et al. (2022).…”

“…PTFE was used as the standard material for signal calibration (Huang et al, 2017). Detailed amplitude, absorption coefficient, and refractive index calibration procedures followed those described in Yang et al (2022).…”

“…Recently, Ma et al (2019) examined the CuSO 4 .5H 2 O and quartz at a temperature range of 23-260°C and showed that the molecular and structural water can also be detected by the transmission terahertz time-domain (THz-TDS) technique. Using this method, the molecular and structural water can be recognized by the high absorption coefficient at low and high frequencies, respectively (Huang et al, 2017(Huang et al, , 2018Yang et al, 2022). The terahertz wave, span a frequency between microwave and infrared bands (0.1-10 THz), is characterized by strong penetrability, low energy security, and high coherence property and can be detected by the THz-TDS technique (Huang et al, 2017).…”

Neural Network-Based Analysis and Its Application to Spectroscopy for Mango

“…Following cleaning, the mangoes were uniformly positioned in a controlled outdoor environment to minimize external factors, such as wind and surface temperature, that could affect the prediction accuracy. Each mango was individually numbered and marked in sequence [13].…”

Free Field of View Infrared Digital Holography for Mineral Crystallization

“…However, none of the above means can obtain the vital phase information on the crystal. Terahertz time-domain spectroscopy (THz-TDS) can detect phase-shift signal, but it has low imaging ability in the long-wave band. − There is an urgent need for a phase detection method in the short-wavelength band to bridge the gap in the infrared spectrum.…”