内蒙古镶黄旗毕山地区土壤地球化学特征及找矿方向

doi:10.11720/wtyht.2025.1382

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Abstract

To determine the optimal prospecting target in the Bishan area, Xianghuang Banner, Inner Mongolia, this study conducted a geochemical survey at 1∶10,000 scale. Using multivariable statistical analysis, this study analyzed 14 elements (i.e., Au, Ag, Cu, Pb, Zn, Mn, Mo, Li, W, Sb, Bi, B, Hg, and As) in soil samples from the study area. The results indicate that six elements, including Au, Ag, Pb, Zn, Li, and As, exhibited high enrichment degrees, suggesting their significant metallogenic potential. The anomalies of high-content elements are principally dictated by the outer contact zone between tuffs/tuffaceous volcanic breccias and granites in the Lower Permian Sanmianjing Formation. The ore-forming elements are primarily controlled by the NW-trending fault zone. Alterations like silicification, binarite, pyrite, galena, and sphalerite alterations serve as principal prospecting markers. Based on the geological conditions for mineralization in the Bishan area, this study delineated three composite anomalies and two prospecting targets, with Ag ore bodies discovered through engineering validation. Soil geochemistry proves crucial for the successful identification of polymetallic ore bodies, thereby providing a significant foundation for subsequent mineral exploration efforts.

Key words： soil geochemistry composite anomaly prospecting orientation polymetallic ore

Received: 12 September 2024 Published: 07 August 2025

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	Chen-Hui CHAI
	Yue-Qiang QIN
	Peng-Yuan LI
	Kai XIN
	Jian-Min WANG
	Jia-Le YIN
	Chao-Qun LI
	Ning-Bo YUAN
	Dong GUO
	Yu-Fei SUN

Cite this article:

Chen-Hui CHAI,Yue-Qiang QIN,Peng-Yuan LI, et al. Soil geochemical characteristics and prospecting orientations in the Bishan area, Xianghuang Banner, Inner Mongolia[J]. Geophysical and Geochemical Exploration, 2025, 49(4): 778-789.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2025.1382 OR https://www.wutanyuhuatan.com/EN/Y2025/V49/I4/778

5]) and regional geological schematic map (b) (revised by Li^[15]) of Bishan area, Xianghuang Banner, Inner Mongolia
1—lower Permian Sanmianjing Formation;2—lower Permian Elitu Formation;3—upper Jurassic Manketouebo Formation;4—lower Cretaceous Damoguaihe Formation;5—Pliocene Baogedawula Formation;6—Holocene sand and gravel;7—Jurassic biotite granite;8—Jurassic biotite quartz porphyry and quartz porphyry;9—Jurassic biotite quartz diorite;10—Cretaceous granite porphyry;11—granite vein;12—granite porphyry vein;13—granitic pegmatite vein;14—quartz vein;15—diorite porphyrite vein;16—measured geological boundary;17—measured angular unconformity boundary;18—measured lithofacies zone boundary;19—measured normal fault;20—measured reverse fault;21—measured fault of unknown kinematics;22—bedding attitude;23—study area;24—schematic location of Fig.b in Fig.a
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Geotectonic location (a) (revised by Liu et al.^[5]) and regional geological schematic map (b) (revised by Li^[15]) of Bishan area, Xianghuang Banner, Inner Mongolia
1—lower Permian Sanmianjing Formation;2—lower Permian Elitu Formation;3—upper Jurassic Manketouebo Formation;4—lower Cretaceous Damoguaihe Formation;5—Pliocene Baogedawula Formation;6—Holocene sand and gravel;7—Jurassic biotite granite;8—Jurassic biotite quartz porphyry and quartz porphyry;9—Jurassic biotite quartz diorite;10—Cretaceous granite porphyry;11—granite vein;12—granite porphyry vein;13—granitic pegmatite vein;14—quartz vein;15—diorite porphyrite vein;16—measured geological boundary;17—measured angular unconformity boundary;18—measured lithofacies zone boundary;19—measured normal fault;20—measured reverse fault;21—measured fault of unknown kinematics;22—bedding attitude;23—study area;24—schematic location of Fig.b in Fig.a

Geological schematic map and comprehensive anomaly of Bishan research area
1—upper Jurassic Manketouebo Formation;2—Holocene sand and gravel;3—Jurassic fine-grained monzogranite;4—Cretaceous granite porphyry;5—granite porphyry vein;6—granite vein;7—rhyolite porphyry vein;8—quartz vein;9—mineralized alteration zone;10—orebody location and number;11—geological boundary;12—measured fault;13—comprehensive anomaly area and number;14—prospecting target area and number;15—borehole location and number;16—trench location and number

Statistics of soil geochemical elements in Bishan polymetallic ore exploration area, Xianghuang Banner

Classification statistics of variation coefficient and enrichment coefficient of soil elements

Element dispersion in the Bishan polymetallic ore exploration area of Xianghuang Banner

Approximation matrix of soil element correlation analysis

Pedigree of cluster analysis of soil element

KMO and Bartlett sphericity tests

Orthogonal rotating load matrix

Soil survey geochemical distribution of Bishan research area

Comprehensive abnormal evaluation order

HT-1 comprehensive anomaly

HT-2 comprehensive anomaly

HT-3 comprehensive anomaly

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