The “trinity” prospecting prediction geological model and application demonstration of Yindongpo gold deposit in Henan Province

TANG Xiangwei; ZHANG Xiaofei; YANG Zeqiang; GUO Yueshan; WANG Haisheng; LI Jishan

doi:10.12097/gbc.2023.05.018

2024 Vol. 43, No. 7

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Article navigation > Geological Bulletin of China > 2024 > 43(7): 1120-1132

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TANG Xiangwei, ZHANG Xiaofei, YANG Zeqiang, GUO Yueshan, WANG Haisheng, LI Jishan. 2024. The “trinity” prospecting prediction geological model and application demonstration of Yindongpo gold deposit in Henan Province. Geological Bulletin of China, 43(7): 1120-1132. doi: 10.12097/gbc.2023.05.018

Citation:

TANG Xiangwei, ZHANG Xiaofei, YANG Zeqiang, GUO Yueshan, WANG Haisheng, LI Jishan. 2024. The “trinity” prospecting prediction geological model and application demonstration of Yindongpo gold deposit in Henan Province. Geological Bulletin of China, 43(7): 1120-1132. doi: 10.12097/gbc.2023.05.018

The “trinity” prospecting prediction geological model and application demonstration of Yindongpo gold deposit in Henan Province

1.
Third Institute of Geological and Mineral Exploration, Bureau of Geology and Mineral Exploration and Development of Henan Province, Zhengzhou 450000, Henan, China
2.
Development and Research Centre, China Geological Survey, Beijing 100037, China

More Information

Corresponding author: ZHANG Xiaofei, zhangxiaofei521125@163.com

Received Date: 11 May 2023

Revised Date: 13 September 2023

Publish Date: 15 July 2024

Abstract

Abstract

The Yindongpo gold deposit is a super large gold deposit located in Zhuzhuang Town, Tongbai County, Henan Province, associated with silver, lead and zinc. This paper applies the prospecting prediction methods and theories in the exploration area to construct a "trinity" geological model for prospecting prediction, which focuses on the ore-forming geological body, ore-forming structure, ore-forming structural plane, and the characteristic markers of mineralization. Based on field investigation and mineral deposit study, the Yindongpo deposit has been suggested as middle-low temperature (200~350℃) magmatic-hydrothermal deposit, related to magmatic activities at Early Cretaceous. C-H-O-S isotopes indicate that ore-forming materials and fluids mainly originated from magmas. The metallogenic geological body is determined as concealed Early Cretaceous pluton in deep part of the Yindongpo deposit. Metallogenic structural plane is lithologic interface (silicon/calcium interface), structural plane of fold metallogenic tectonic system, structural plane of sedimentary diagenesis. Mineralization indicators are skarn, potassic alteration, beresitization, silicification, iron dolomitization, fluorite, and carbonation. Ore prediction model has been established, defining prospecting area, and 85% drill hole witnessed mineralization, achieving exploration breakthrough. The work has been meaningful in guiding to next ore exploration step.

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References

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