青海门源地区克克赛金矿床地球化学异常特征及找矿前景  

Geochemical anomaly characteristics and prospecting prospects of gold deposit in Kekesai,Menyuan area,Qinghai Province

作　　者：董化祥 谢祥 禹明高 DONG Huaxiang;XIE Xiang;YU Minggao(Henan Nonferrous Metal Mineral Exploration Engineering Technology Research Center,Zhengzhou 450016,Henan,China;No.6 Team of Henan Geological and Mineral Resources Bureau for Non-ferrous Metals,Zhengzhou 450016,Henan,China)

机构地区：[1]河南省有色金属矿产探测工程技术研究中心,河南郑州450016 [2]河南省有色金属地质矿产局第六地质大队,河南郑州450016

出　　处：《矿产勘查》2021年第3期565-573,共9页Mineral Exploration

摘　　要：克克赛金矿区位于中国重要的多金属成矿带—祁连成矿带上,该区多金属矿成矿条件良好,矿种齐全,区域内沿大坂山断裂带已发现众多有色金属矿床。为进一步研究克克赛地区成矿远景,该文对克克赛金矿区进行1∶1万地质填图、1∶1万土壤地球化学测量等工作,查明了金成矿地质背景、矿床成因及找矿标志等。通过对化探数据分析,及对矿区内指示元素异常的特征、分布与地质现象进行对比分析,进行异常解释评价。研究显示:矿区下火山岩组火山岩是本区多金属矿产的主要含矿地层;大坂山断裂为区内控矿构造,构造破碎带为成矿有利部位;褐铁矿化、黄铁矿化等矿化带为找矿的重要标志;共圈定综合异常11处,其中TR3号异常带是该区内最具找矿前景的找矿地段,是该区找矿重点靶区。The Kekesai gold deposit in Menyuan County is located in the important polymetallic metallogenic belt-Qilian metallogenic belt in China. The metallogenic conditions of the polymetallic ore are good and the mineral species are complete. Numerous nonferrous metal deposits have been found along the Fault belt of Dabbanshan in the region. In order to further study the metallogenic prospect in Kekesai area,this paper conducted 1 ∶ 10000 geological mapping and 1 ∶ 10000 soil geochemical survey of The Kekesai gold area,and basically found out the geological background of gold mineralization,the genesis of the deposit and the prospecting criteria.Through the analysis of geochemical data and the comparative analysis of the characteristics,distribution and geological phenomena of the indicator element anomaly in Kekesai gold mine area,the interpretation and evaluation of the anomaly are carried out. The results show that the bathyal facies sediments composed of the volcanics with clastic rocks and carbonate rocks of the Lower Ordovician( Oa3)in the Middle And upper Ordovician are the main ore-bearing strata of the polymetallic minerals in the area. The fault of Dabbanshan is an internal ore-controlling and ore-hosting fault structure. The mineralization zones such as limonization,pyritization and peafanization are important signs of ore exploration. A total of 11 comprehensive anomalies were delineated,And the TR3 anomaly zone is the most promising area and the key target area in this area.

关 键 词：金矿 地球化学异常 祁连成矿带 矿产勘查工程 克克赛 青海 

分 类 号：P618.51[天文地球—矿床学]