| 甘肃北山红柳河金矿床构造叠加晕模型及找矿预测 |
| 点此下载全文 |
| 引用本文：陈世强,杨瑞东,戴霜,李生喜,王宁祖,李旭东,宋仁超,牛春晖.2026.甘肃北山红柳河金矿床构造叠加晕模型及找矿预测[J].地球学报,47(5):1034-1042. |
| DOI：10.3975/cagsb.2026.040201 |
| 摘要点击次数: 93 |
| 全文下载次数: 9 |
|
| 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。 |
|
| 中文摘要:红柳河金矿床是北山南带红柳园裂谷近年来新发现的蚀变岩型金矿，目前规模已达中型。本文系统采集分析了391件钻孔样品, 旨在建立其构造叠加晕预测模型, 指导深部找矿预测。矿化带内Au元素属于超常富集元素, As、Sb元素属于强富集元素; 因子分析和R型聚类分析大致确定红柳河金矿区存在三期成矿阶段, 早期As-Au-Sb元素组合代表了主成矿阶段的低温热液产物; 对Au1、Au2、Au20主矿体特征指示元素进行统计分析, 确定红柳河金矿床单一矿体理想原生晕分带序列为Sb、B(前缘晕)→Au、As、Ag(近矿晕)→Zn-Pb-Bi-Cu-W(尾晕), 构建了红柳河金矿构造叠加晕实用模型, 根据前缘晕与尾晕共存的预测标志, 在主矿体深部圈定出找矿靶区1处, 经钻探验证新增金资源量1 t以上。该研究为北山地区金矿床的“攻深找盲”和新区勘查提供了重要依据。 |
| 中文关键词:北山成矿带 红柳河金矿 构造叠加晕 As-Au-Sb组合 找矿预测 |
| |
| Structural Superimposed Halo Model and Ore-prospecting Prediction for the Hongliuhe Gold Deposit in the Beishan Area, Gansu Province, NW China |
|
|
| Abstract: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. |
| keywords:Beishan metallogenic belt Hongliuhe gold deposit structural superimposed halo As-Au-Sb element association ore-prospecting prediction |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
|
