Discovery and prospecting significance of the gold deposit in the western margin of Dayangshu volcanic basin in Greater Khingan Mountains
LIU Baoshan1, WANG Zeyu1, KOU Linlin1, YANG Yuanjiang2, YANG Fengchao1, LIU Wenyu3
1. Shenyang Geological Survey Center, China Geological Survey, Liaoning Shenyang 110034, China; 2. Research Institute of Regional Geological Survey of Heilongjiang, Heilongjiang Harbin 150036, China; 3. School of Geophysics and Measurement-control Technology, East China Institute of Technology, Jiangxi Nanchang 330013,China
Abstract：The Mesozoic volcanic basin of Greater Khingan Mountains is a favorable area for epithermal volcanic hydrothermal gold deposits. Based on previous delineation of 2 gold prospect areas, Zhangdian and Zhaluomei, during 1:50 000 mineral survey carried out in the western margin of Dayangshu volcanic basin, the authors of this paper conducted verification and inspection of geophysical and chemical exploration anomalies through exploratory trench. A stable extended gold-bearing quartz vein was found in Zhangdian mining area, with a length of about 0.95 km, an apparent thickness of 5~15 m, and its highest gold grade of 88.25×10-6. Two gold ore bodies, one gold mineralized body and one silver ore body, were discovered in Zhaluomei mining area. No.I and No.II gold ore bodies were inferred to be the same gold ore body, with a length more than 600 m, an apparent thickness of 2~3 m, and their highest gold grade of 5.83×10-6. No.IV silver ore body has an apparent thickness of 4.0 m, and its highest grade is (50.90~310.00)×10-6. The authors analyzed the characteristics of soil geochemical anomaly and apparent polarization anomaly of the induced polarization ladder measurement in these two mining areas, and compared these conditions with the metallogenic geological conditions of Sandaowanzi and other gold deposits. The gold deposits in Zhangdian and Zhaluomei mining areas were identified to have medium to large metallogenic resource potential. The discovery of gold deposit in the margin of Dayangshu volcanic basin could provide some reference for the exploration and deployment of gold deposits in the volcanic belt of Greater Khingan Mountains, and promote the improvement of the exploration and research, which could further contribute to the prospecting breakthrough.
刘宝山, 王泽宇, 寇林林, 杨元江, 杨凤超, 刘文玉. 大兴安岭大杨树火山盆地西缘金矿的发现及找矿意义[J]. 中国地质调查, 2024, 11(5): 29-38.
LIU Baoshan,WANG Zeyu,KOU Linlin,YANG Yuanjiang,YANG Fengchao,LIU Wenyu. Discovery and prospecting significance of the gold deposit in the western margin of Dayangshu volcanic basin in Greater Khingan Mountains. , 2024, 11(5): 29-38.
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2024, Vol. 11 
