辽宁省北票市马家营子金矿床地质特征及找矿前景浅析
Geological Characteristics and Prospecting Potential Analysis of the Majiayingzi Gold Deposit in Beipiao City, Liaoning Province
摘要: 辽宁省北票市马家营子金矿床位于华北克拉通北缘，燕辽金成矿带中部，是该带内具有典型断裂控矿特征的金矿之一。为查明马家营子金矿床的成矿条件及找矿前景，文章在区域地质调查与矿区勘查资料基础上，通过区域地质背景分析、矿区地质特征调查及物化探异常解译等手段，对该矿床展开系统研究。结果表明，矿区主要发育北西向、近东西向和北东向三组断裂，其中北西向构造为主要的控矿和容矿构造。金矿化主要赋存于北西向断裂带内的石英脉中，石英脉呈扁豆状或串珠状展布。围岩蚀变以硅化、绿泥石化、绢云母化及碳酸盐化为主。矿区内Au元素地球化学异常显著，Au-2异常强度最高且处于多组断裂交汇部位，成矿条件优越。结合与邻近东五家子中型金矿的类比分析，本区具备相似的成矿地质条件，成矿与燕山后期酸性花岗岩密切相关，深部推测存在酸性岩体，具备形成石英脉型及中生代火山岩型金矿的潜力，找矿前景良好，下一步工作应注重深部构造与隐伏岩体的探测。
Abstract: The Majiayingzi gold deposit in Beipiao City, Liaoning Province, is located on the northern margin of the North China Craton and in the central part of the Yan-Liao gold metallogenic belt. It is a typical fracture-controlled deposit within this belt. To investigate the metallogenic conditions and prospecting potential of the deposit, this study systematically examines its geological setting based on regional geological surveys and exploration data, through analysis of the regional geological background, investigation of mining area characteristics, and interpretation of geophysical and geochemical anomalies. The results indicate that the mining area is predominantly developed with three sets of fractures: NW-trending, near EW-trending, and NE-trending, among which the NW-trending structures serve as the main ore-controlling and ore-hosting features. Gold mineralization primarily occurs in quartz veins within the NW-trending fracture zones, with the veins exhibiting lenticular or beaded distributions. Wall-rock alterations are mainly characterized by silicification, chloritization, sericitization, and carbonatization. Significant Au geochemical anomalies are observed in the mining area, with the Au-2 anomaly showing the highest intensity and located at the intersection of multiple fracture sets, indicating favorable metallogenic conditions. Comparative analysis with the nearby Dongwujiazi medium-sized gold deposit reveals similar metallogenic geological conditions in this area. Mineralization is closely related to Late Yanshanian acidic granites, and the presence of deep-seated acidic rock bodies is inferred. The area holds potential for forming quartz-vein type and Mesozoic volcanic rock-type gold deposits, demonstrating promising prospecting prospects. Future work should focus on the detection of deep structures and concealed rock bodies.
文章引用：刘腾. 辽宁省北票市马家营子金矿床地质特征及找矿前景浅析[J]. 地球科学前沿, 2026, 16(3): 345-354. https://doi.org/10.12677/ag.2026.163032

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