内蒙古额济纳旗大狐狸山南区铜金钴多金属元素富集特征及找矿方向研究

Study on Enrichment Characteristics and Prospecting Directions of Polymetallic Elements of Copper Gold Cobalt and in Southern Area of Dahuli Mountain of Ejina Banner in Inner Mongolia

摘要:

内蒙古自治区北山成矿带已探明多处金属矿产，如黑鹰山大型铁矿床、额勒根乌兰乌拉铜钼多金属矿、乌珠尔嘎顺铁铜矿床、小狐狸山中型钼矿床、独龙包钼矿等，研究区位于北山成矿带的“额济纳雅干成矿带”“甜水井乌珠尔嘎顺金、铜多金属及富铁矿找矿远景区”，具有相似的成矿地质条件，为查清研究区Cu、Au、Co等金属富集规律特征，通过开展地球化学岩石测量工作，对相关成矿元素进行聚类分析、因子分析等地质统计学分析，研究结果表明,区内Cu、Au、Co异常规模大,峰值高,富集特征及浓集中心明显,相关元素套合较好。通过探槽工程及地化剖面等手段进行异常查证,所取样品中Cu、Au、Co等元素分析结果与异常特征套合较好,本区内构造裂隙带找寻Cu、Au、Co等热液元素矿床或矿化体潜力较大。

Abstract:

Multiple metal mineral deposits has been identified in Beishan metallogenic belt in Inner Mongolia Autonomous Region, such as Heiyingshan large scale iron deposit, Elegenwulanula copper-molybdenum polymetallic deposit, Wuzhuergashun iron-copper deposit, Xiaohulishan medium-sized molybdenum deposit and Dulongbao molybdenum deposit. The study area is located in "Ejina-Yagan metallogenic belt" and "Tianshuijing-Wuzhuergashun gold, copper polymetallic, and high-grade iron ore prospecting area" of Beishan metallogenic belt with similar metallogenic geological conditions. In order to clarify the enrichment characteristics of Cu, Au, Co and other metals in the study area, geochemical rock measurements have been carried out to perform geological statistical analysis, such as cluster analysis and factor analysis on relevant ore-forming elements. It is showed that Cu, Au, Co anomalies in the area are large in scale, with high peak values, obvious enrichment characteristics and concentration centers, and good correlation of relevant elements. Through trench engineering and geochemical profiling, anomaly verification has been carried out. The analysis results of Cu, Au, Co and other elements in the collected samples can match well with the anomaly characteristics. There is great potential for searching for Cu, Au, Co and other hydrothermal element deposits or mineralized bodies in the structural fracture zone of this area.