Primary halo characteristics on the top of the ore-bearing horizon in the Xiwan lead-zinc deposit in Anhui Province

CHENG Pei-Sheng; WANG Shu-Chao; LI Zhuang; GU Da-Nian; ZHANG Jian-Ming; DU Dong-Xu

doi:10.11720/wtyht.2022.1406

2022 Vol. 46, No. 6

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CHENG Pei-Sheng, WANG Shu-Chao, LI Zhuang, GU Da-Nian, ZHANG Jian-Ming, DU Dong-Xu. 2022. Primary halo characteristics on the top of the ore-bearing horizon in the Xiwan lead-zinc deposit in Anhui Province. Geophysical and Geochemical Exploration, 46(6): 1381-1387. doi: 10.11720/wtyht.2022.1406

Citation:

CHENG Pei-Sheng, WANG Shu-Chao, LI Zhuang, GU Da-Nian, ZHANG Jian-Ming, DU Dong-Xu. 2022. Primary halo characteristics on the top of the ore-bearing horizon in the Xiwan lead-zinc deposit in Anhui Province. Geophysical and Geochemical Exploration, 46(6): 1381-1387. doi: 10.11720/wtyht.2022.1406

Primary halo characteristics on the top of the ore-bearing horizon in the Xiwan lead-zinc deposit in Anhui Province

1. State Key Laboratory of Nuclear Resources and Environment, East China University of Technology,Nanchang 330013,China；
2. Geological Exploration Technologies Institute of Anhui Province, Hefei 230031,China

Received Date: 22 July 2021

Revised Date: 20 December 2022

Publish Date: 03 January 2023

Abstract

Abstract

The Xiwan lead-zinc deposit in Anhui Province is located on the northern margin of the Luzong volcanic basin. This deposit is an overburden area, causing great difficulties with exploration. Based on the analysis results of borehole core samples, this study analyzed the characteristics of the primary halos of the Xiwan lead-zinc deposit. The results show that the mineralized zone and its roof and floor have significantly different contents and anomaly characteristics of elements. Specifically, brecciated limestones in the mineralized zone have high contents of elements such as Pb, Zn, Ag, As, Sb, Bi, Au, Cu, and Mo. These elements feature high anomaly intensity and large anomaly scales and have definite concentrations and component zoning. These element anomalies effectively reflect the characteristics of orebodies and significantly indicate the NE-trending extension of ore bodies. The volcanic rocks on the roof of the mineralized zone have high contents of elements such as As, Sb, Pb, Zn, and Ag. These elements feature weak anomalies without significant zoning. These element anomalies can only indicate the ore bodies near the sampling points. The anhydrites on the floor have low contents of the abovementioned elements, without significant anomaly. Therefore, As, Sb, Pb, Zn, Ag, and Mo are indicator elements of lead-zinc mineralization in the study area. The brecciated limestones in the mineralized zone have high element contents, forming anomalies with high intensity and large scales. Moreover, these anomalies are characterized by significant concentrations and component zoning and can clearly indicate the extension direction of ore bodies. The contents and anomaly characteristics of elements in the core samples collected from different metallogenic parts can guide the further prospecting of the mining area.
- overburden area /
- lead-zinc deposit /
- primary halo /
- Luzong volcanic basin

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References

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