青海松树南沟金矿区土壤地球化学特征及异常评价

doi:10.11720/wtyht.2025.0123

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Abstract

The Songshunangou gold mining area in Qinghai Province is situated in the central part of the North Qilian metallogenic/orogenic belt. Two deposits have been identified in its eastern and western portions, with cumulative proven Au resources exceeding 34 t, establishing them as large-scale deposits. Moreover, the area holds significant potential for ore prospecting, necessitating an urgent need for research into prospecting orientations to support mineral exploration efforts. Hence, based on the anomaly analysis of 1∶10 000 soil geochemical survey data and employing the two-window moving average method, this study identified the anomaly distributions and enrichment patterns of 10 elements (i.e., Au, As, Sb, Hg, Cu, Pb, Zn, Ag, W, and Mo) in the area. By analyzing elemental geochemical anomaly data and integrating the geological conditions for mineralization, this study delineated composite anomaly zones in the area using the average contrast method, followed by anomaly assessments. The results indicate that Au is the primary ore-forming element in the area, characterized by strong enrichment and significant variability, suggesting high mineralization potential. Seven composite soil geochemical anomaly zones were delineated in the area, with zones HP-1, HP-2, and HP-5 demonstrating the greatest potential for mineral exploration. Engineering validation confirms the presence of two ore/mineralized bodies, with one exhibiting an ore thickness of 1.5 m and a gold grade of 0.57 g/t in zone HP-2 and the other featuring an ore thickness of 1.42 m and a gold grade of 1.67 g/t in zone HP-5. Overall, this study provides geochemical evidence for determining prospecting orientations in the Songshunangou gold mining area while offering a reference for the deployment of subsequent mineral exploration work in the area.

Key words： Songshunangou gold mining area soil geochemical characteristics composite anomaly metallogenic prediction North Qilian orogenic belt

Received: 07 April 2025 Published: 30 December 2025

ZTFLH:

P632.1

Corresponding Authors: LANG Xing-Hai E-mail: wzs371421@163.com;langxinghai@126.com

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	Geng-Hu CHEN
	Xing-Hai LANG
	Zhao-Shuai WANG
	Wei-Cai DONG
	Deng-Ke WANG
	Zuo-Peng XIANG
	Zhuang LI
	Zi-Feng YE
	Chang-Yi WU
	Xu-Hui WANG
	Tian-Wen WU
	Chao LUO

Cite this article:

Geng-Hu CHEN,Xing-Hai LANG,Zhao-Shuai WANG, et al. Geochemical characteristics and anomaly assessments of soils in the Songshunangou gold mining area, Qinghai Province[J]. Geophysical and Geochemical Exploration, 2025, 49(6): 1281-1290.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2025.0123 OR https://www.wutanyuhuatan.com/EN/Y2025/V49/I6/1281

The location of the Songshunangou mining area and its surrounding geological structures (a) and geological map (b)

Fig.1)
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Soil geochemical sampling range dendrogram of the Songshunangou district(the geological sketch is shown in Fig.1)

Soil geochemical parameter in the Songshunangou district

Correlation matrix diagram of soil geochemical elements in the Songshunangou district

Dendrogram of R-type cluster analysis dendrogram of soil geochemical elements in the Songshunangou district

Factor analysis results in the Songshunangou district

Element anomaly in the Songshunangou district

Comprehensive anomaly map of soilelements in the Songshunangou district

Mining model in the Songshunangou district

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