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Volume 15
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10.3390/min15020104
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Article

Shortwave Infrared Spectroscopy and Geochemical Characteristics of White Mica-Group Minerals in the Sinongduo Low-Sulfide Epithermal Deposit, Tibet, China

by
Xuerui Li
1,
Na Guo
1,*,
Chunhao Li
1,
Siyuan Deng
1 and
Weirui Zhou
2
1
College of Earth and Planetary Sciences, Chengdu University of Technology, Chengdu 610059, China
2
College of Engineering, Tibet University, Lhasa 850000, China
*
Author to whom correspondence should be addressed.
Minerals 2025, 15(2), 104; https://doi.org/10.3390/min15020104
Submission received: 12 December 2024 / Revised: 15 January 2025 / Accepted: 21 January 2025 / Published: 22 January 2025
(This article belongs to the Special Issue New Discovery and Exploration Methods of Porphyry and Epithermal Mineral Deposits)
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Abstract

Sinongduo is the first low-sulfidation epithermal deposit to be found in the Gangdese metallogenic belt, Xizang, China. Through the integration of Shortwave Infrared (SWIR) spectroscopy, an electron probe microanalysis (EPMA), X-ray diffraction (XRD), and three-dimensional modeling, the following findings were obtained: (1) The alteration minerals in the belt predominantly belong to the white mica group, with mineral assemblages of muscovite → muscovite + illite → muscovite + illite + montmorillonite → muscovite + paragonite + montmorillonite → muscovite + paragonite + illite + montmorillonite from the outer edges to the ore zones. (2) On the basis of the number of interlayer cations, the white mica-group minerals were classified into three distinct types. (3) The SWIR spectral exploration model indicates the spatial distribution of the mineral combinations and their spectral characteristics in the low-sulfidation epithermal deposit. On the basis of these results, we predict that Woruo, an area located north of Sinongduo, has immense potential for future mineral exploration.
Keywords: low-sulfidation epithermal deposit; shortwave infrared; white mica-group mineral; Sinongduo; Woruo low-sulfidation epithermal deposit; shortwave infrared; white mica-group mineral; Sinongduo; Woruo

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MDPI and ACS Style

Li, X.; Guo, N.; Li, C.; Deng, S.; Zhou, W. Shortwave Infrared Spectroscopy and Geochemical Characteristics of White Mica-Group Minerals in the Sinongduo Low-Sulfide Epithermal Deposit, Tibet, China. Minerals 2025, 15, 104. https://doi.org/10.3390/min15020104

AMA Style

Li X, Guo N, Li C, Deng S, Zhou W. Shortwave Infrared Spectroscopy and Geochemical Characteristics of White Mica-Group Minerals in the Sinongduo Low-Sulfide Epithermal Deposit, Tibet, China. Minerals. 2025; 15(2):104. https://doi.org/10.3390/min15020104

Chicago/Turabian Style

Li, Xuerui, Na Guo, Chunhao Li, Siyuan Deng, and Weirui Zhou. 2025. "Shortwave Infrared Spectroscopy and Geochemical Characteristics of White Mica-Group Minerals in the Sinongduo Low-Sulfide Epithermal Deposit, Tibet, China" Minerals 15, no. 2: 104. https://doi.org/10.3390/min15020104

APA Style

Li, X., Guo, N., Li, C., Deng, S., & Zhou, W. (2025). Shortwave Infrared Spectroscopy and Geochemical Characteristics of White Mica-Group Minerals in the Sinongduo Low-Sulfide Epithermal Deposit, Tibet, China. Minerals, 15(2), 104. https://doi.org/10.3390/min15020104

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