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DOI	10.1016/j.oregeorev.2023.105833
	Short-wavelength infrared characteristics and composition of white mica in the Demingding porphyry Cu-Mo deposit, Gangdese belt, Tibet: Implications for mineral exploration
	Ren, Huan; Zheng, Youye; Wu, Song; Wang, Da; Zuo, Ling; Chen, Lie; Gao, Feng; Wei, Jiangang; Wang, Shucun; Shu, Defu; Luosang, Jiancuo; Kang, Peng
发表日期	2024
ISSN	0169-1368
EISSN	1872-7360
卷号	164
英文摘要	The Demingding Cu-Mo deposit, found in the eastern Gangdese metallogenic belt in China, has a significant exploration potential. Detailed field studies coupled with short-wavelength infrared (SWIR) spectroscopy and electron probe micro analyses (EPMA) identified a total of 15 alteration minerals such as white mica group minerals, chlorite, kandite, and smectite groups. The study also discovered the spatial distribution of alteration zone patterns, including phyllic, propylitic, and intermediate argillic alterations. Furthermore, variations were observed in the Al-OH absorption position (Pos2200) of the white mica group with variable Al-Si-Fe-Mg content. Most of the white micas in the ore zone were muscovitic series, whereas the barren zone contained phengitic series micas. Some micas have undergone a transition to illite due to low-temperature alteration overprinting. The western part of the deposit exhibited lower Pos2200, higher SWIR-IC, and higher Dep2200 values, implying an intense phyllic alteration and higher paleotemperatures. These characteristics suggest that the area is in close proximity to the hydrothermal center and fluid channel. Therefore, it was identified as an exploratory target for buried copper ore bodies. The SWIR spectra of the white mica group can be used for exploration in other similar porphyry deposits. Under acidic conditions, shorter Pos2200 and higher SWIR-IC can be used as indicators for hydrothermal or mineralization centers.
关键词	Short-wavelength infrared (SWIR)Hydrothermal mineralization center Mineral exploration Demingding porphyry deposit Gangdese metallogenic belt
英文关键词	HYDROTHERMAL ALTERATION MINERALS; DAM IOCG DEPOSIT; REFLECTANCE SPECTROSCOPY; COPPER-DEPOSIT; SPECTRAL CHARACTERISTICS; GEOCHRONOLOGICAL CONSTRAINTS; MINEROGENETIC SERIES; SWIR CHARACTERISTICS; ISOTOPE CONSTRAINTS; MAGMATIC INTRUSIONS
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
WOS记录号	WOS:001146497400001
来源期刊	ORE GEOLOGY REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283300
作者单位	China University of Geosciences - Beijing; China University of Geosciences - Beijing; China University of Geosciences - Wuhan
推荐引用方式 GB/T 7714	Ren, Huan,Zheng, Youye,Wu, Song,et al. Short-wavelength infrared characteristics and composition of white mica in the Demingding porphyry Cu-Mo deposit, Gangdese belt, Tibet: Implications for mineral exploration[J],2024,164.
APA	Ren, Huan.,Zheng, Youye.,Wu, Song.,Wang, Da.,Zuo, Ling.,...&Kang, Peng.(2024).Short-wavelength infrared characteristics and composition of white mica in the Demingding porphyry Cu-Mo deposit, Gangdese belt, Tibet: Implications for mineral exploration.ORE GEOLOGY REVIEWS,164.
MLA	Ren, Huan,et al."Short-wavelength infrared characteristics and composition of white mica in the Demingding porphyry Cu-Mo deposit, Gangdese belt, Tibet: Implications for mineral exploration".ORE GEOLOGY REVIEWS 164(2024).