| 甘肃北山红柳河金矿床构造叠加晕模型及找矿预测 |
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| 关键词:Beishan metallogenic belt Hongliuhe gold deposit structural superimposed halo As-Au-Sb element association ore-prospecting prediction |
| 基金项目:本文由甘肃省地勘基金项目“甘肃省瓜州县红柳河金矿普查”(编号: 202201-D10; 202301-D02)、甘肃省自然科学基金项目“敦煌地块北缘红柳河金矿床黄铁矿特征及成矿机制研究”(编号: 24JRRA752)、甘肃省自然资源领域科技创新与应用研究项目“甘肃北山红柳园裂谷晚古生代构造演化与金多金属矿成矿作用研究”(编号: 202508)和甘肃省科技计划项目“甘肃祁连山-北山重要矿集区金铜钨多金属矿成矿与增处示范”-课题3-专题1(编号: 26ZDFF001)联合资助。 |
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| Structural Superimposed Halo Model and Ore-prospecting Prediction for the Hongliuhe Gold Deposit in the Beishan Area, Gansu Province, NW China |
| The Hongliuhe gold deposit is a medium-sized deposit newly discovered in the Carboniferous Shibanshan Group of the Beishan orogenic belt. In this study, 391 drill-hole samples were systematically collected and analyzed to establish a structural superimposed halo prediction model and guide deep ore-prospecting prediction. In the mineralized zone, Au is a super-enriched element, whereas As and Sb are strongly enriched elements. Factor analysis and R-type cluster analysis indicate that three mineralization stages occurred in the Hongliuhe gold mining area, and the early As-Au-Sb element association represents the low-temperature hydrothermal stage of the main mineralization. Statistical analysis of the characteristic indicator elements of the main ore bodies (Au1, Au2, and Au20) indicates that the ideal primary halo sequence for a single ore body in the Hongliuhe gold deposit is Sb, B (proximal halo)→Au, As, Ag (peripheral halo)→Zn-Pb-Bi-Cu-W (distal halo). Based on these results, a practical structural superimposed halo model for the Hongliuhe gold deposit was established. One ore-prospecting target area has been delineated in the deeper part of the main ore body based on the coexistence of proximal and distal halo indicators. Drilling verification has confirmed the addition of more than 1 ton of new gold resources. These results provide an important basis for deep exploration and concealed ore prospecting for gold deposits in the Beishan area and for the identification of new exploration targets. |
| CHEN Shiqiang,YANG Ruidong,DAI Shuang,LI Shengxi,WANG Ningzu,LI Xudong,SONG Renchao,NIU Chunhui.2026.Structural Superimposed Halo Model and Ore-prospecting Prediction for the Hongliuhe Gold Deposit in the Beishan Area, Gansu Province, NW China[J].Acta Geoscientica Sinica,47(5):1034-1042. |
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