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| Qiyugou auriferous breccia pipes: A low － sulphidation epithermal system linked with transition of tectonic regime from collisional compression to extension，Xiong＇ershan，Henan，China |
| ZHANG Yuanhou,ZHANG Shihong and Pirajno Franco |
| 1． College of Earth Sciences，Jilin University，Changchun 130061，China; 2． State Key Laboratory of Biogeology and Environmental，China University of Geosciences，Beijing 100083，China; 3． Geological Survey of Western Australia，Perth WA6004，Australia |
| Received null Revised null Online 2021-02-25 |
| Reference null |
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