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| The application of the integrated geological, geophysical and geochemical methods to ore-prospecting at the southern edge of Xiaohe rock body in western Henan Province |
| BAI De-Sheng, YANG Huai-Hui, ZONG Rui, LIU Zheng-Hao, WANG Hua-Bing |
| No. 2 Institute of Geological and Mineral Resources Survey of Henan, Zhengzhou 450001, China |
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Abstract In order to study the ore-potential of the area around the Xiaohe rock body in southern Xiaoqinling, the authors chose 1∶50 000 8-Yi 3AgWBi stream sediment anomaly, Meso-Proterozoic Xiaohe rock body and F1 fault at the contact zone of Meso-Proterozoic Buandaokou Group to conduct geological, geophysical and geochemical integrated exploration. Soil survey led to the discovery of the Zhangjikou 1-Jia 3 Ag Au Sb Zn Pb As Co Cu Mo B composite anomaly characterized by relatively good element combination, large anomaly area and high intensity, in which the highest value of Ag is higher than 20×10-6, with distinct three-grade concentration zoning and relatively strong concentration center; IP sounding predicted that F1 fault extends downward, surface trenching discovered a silver orebody at 1-Jia 3 anomaly in F1 structural alteration zone, and drilling revealed the existence of a thick and large Ag-Pb-Zn orebody. The discovery of this ore deposit has realized the ore-prospecting breakthrough at the southern edge of Xiaohe rock body, and also serves as a typical example of the application of the geological, geophysical and geochemical integrated exploration.
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Received: 27 October 2016
Published: 20 October 2017
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