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Application of integrated geological and structural investigations to the discovery of new mineral zones related to the Daping gold deposit, Southwest China

文献类型：期刊论文

作者Yang, Xi-An1,4; Wu, Jie2; Xu, De-Ru1; Ren, Hai-Bing3
刊名ORE GEOLOGY REVIEWS
出版日期2023-07-01
卷号158页码:15
ISSN号0169-1368
关键词Daping Orogenic Au mineralization Porphyry Au mineralization Ore -controlling structure Mineral exploration
DOI10.1016/j.oregeorev.2023.105519
英文摘要The Daping gold deposit is one of the largest gold deposits in the Ailaoshan gold belt of SW China. It has proven gold reserves of more than 70 tonnes and has been mined for 36 years. Finding new orebodies to extend the mine life has become urgent since the main gold orebodies are almost depleted. Ore deposit types in the Daping area include quartz-vein and porphyry gold types of mineralization. The quartz-vein ores are hosted in late Prote-rozoic diorite and Silurian limestones and controlled by NW trending faults. We have studied the ore-controlling structures to determine palaeo-stress directions of V1-2-3 and V37 orebodies, and the distribution of gold mineralization in the V1-2-3 orebodies. Based on the field observation, we identified six stages of structure in the Daping gold deposit, i.e., pre-mineralization (stage 1), syn-mineralization (stages 2 to 4), and post-mineralization (stages 5 and 6). The spatial distribution of gold orebodies at Daping is mainly controlled by the compressional faults of stage 1 that is associated with the Ailaoshan orogenic belt, and overprinted by structures of later stages. Orebodies from gold deposits in orogenic belts commonly have greater vertical dimensions than horizontal di-mensions, suggesting that V1-2-3 orebodies may extend to deeper area.Our data indicate that higher gold grades and the thickest parts of the orebodies are associated with deeper parts of the V1-2-3 orebodies (up to 800 m in depth), and are likely related to a concealed mineralized porphyry which was intersected in drill core and identified as xenolith in lamprophyre dikes in the underground mine workings. The quartz-vein type gold mineralization at the Daping gold deposit was possibly overprinted by the porphyry gold mineralization, as indicated by the discovery of the new quartz-vein-associated orebodies beneath the current levels of Daping gold deposit and associated porphyry gold orebodies at Daping gold area.
WOS关键词RIVER SHEAR ZONE ; AILAOSHAN OROGENIC BELT ; ZIRCON U-PB ; CENOZOIC PLATE RECONSTRUCTION ; YUNNAN PROVINCE ; GEOCHRONOLOGICAL EVIDENCE ; FLUID INCLUSIONS ; YUNAN PROVINCE ; TECTONIC ZONE ; NOBLE-GASES
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0806] ; National Natural Science Foundation of China[41930428]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
出版者ELSEVIER
WOS记录号WOS:001013496700001
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/111241]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Yang, Xi-An; Xu, De-Ru
作者单位1.East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Peoples R China
2.Univ Auckland, Sch Environm, Private Bag 92019, Auckland 1142, New Zealand
3.Zijin Min Grp Co Ltd, Xiamen 361006, Fujian, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Xi-An,Wu, Jie,Xu, De-Ru,et al. Application of integrated geological and structural investigations to the discovery of new mineral zones related to the Daping gold deposit, Southwest China[J]. ORE GEOLOGY REVIEWS,2023,158:15.
APA Yang, Xi-An,Wu, Jie,Xu, De-Ru,&Ren, Hai-Bing.(2023).Application of integrated geological and structural investigations to the discovery of new mineral zones related to the Daping gold deposit, Southwest China.ORE GEOLOGY REVIEWS,158,15.
MLA Yang, Xi-An,et al."Application of integrated geological and structural investigations to the discovery of new mineral zones related to the Daping gold deposit, Southwest China".ORE GEOLOGY REVIEWS 158(2023):15.

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来源：地质与地球物理研究所

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