Application of Geochemical Block Method in the Potential Prediction of Copper Resources in Eritrea

XIANGWen-Shuai; JIANG Jun-Sheng; ZHAO Kai; ZENG Guo-Ping; ERMIAS Yohannes; TESFAI Berhe

doi:10.3969/j.issn.2097-0013.2024.01.004

2024 Vol. 40, No. 1

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Article navigation > South China Geology > 2024 > 40(1): 63-74

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XIANGWen-Shuai, JIANG Jun-Sheng, ZHAO Kai, ZENG Guo-Ping, ERMIAS Yohannes, TESFAI Berhe. 2024. Application of Geochemical Block Method in the Potential Prediction of Copper Resources in Eritrea. South China Geology, 40(1): 63-74. doi: 10.3969/j.issn.2097-0013.2024.01.004

Citation:

XIANGWen-Shuai, JIANG Jun-Sheng, ZHAO Kai, ZENG Guo-Ping, ERMIAS Yohannes, TESFAI Berhe. 2024. Application of Geochemical Block Method in the Potential Prediction of Copper Resources in Eritrea. South China Geology, 40(1): 63-74. doi: 10.3969/j.issn.2097-0013.2024.01.004

Application of Geochemical Block Method in the Potential Prediction of Copper Resources in Eritrea

1.Wuhan Center, China Geological Survey (Geosciences Innovation Center of Central South China),Wuhan 430205, Hubei, China
2. Ertirea Geological Survey, Asmara P.O. Box 272, Eritrea
3. China-Africa Gesoscience cooperation Center,Wuhan 430205, Hubei China

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Corresponding author: JIANG Jun-Sheng

Received Date: 11 July 2023

Revised Date: 12 August 2023

Abstract

Abstract

The Neoproterozoic East African orogeny formed a large area of exposed metavolcanic sedimentary rock series and corresponding granitic magmatic rocks in the Arab-Nubian Shield, Eritrea, in which the copper resource is very rich. In this paper, 1:1000000 stream sediment geochemical data in Eritrea was selected as the research object. Based on the theory of geochemical block method, we synthetically evaluated the Cu resource potential of Eritrea. The result of geochemical data shows that the value of geochemical anomaly threshold is 28×10^-6. Seven geochemical blocks and five regional anomalies were delineated. According to the reserves of known deposits in different metallogenic belts, the mineral coefficient of Cu in each areawas calculated. The total copper tonnage and mineral resources in each area were calculated based on the exploration depth of the 1km. Thus, we inferred that the total copper tonnage in the 7 geochemical blocks and 5 regional geochemical anomalies of Eritrea (given a 1 km thickness of every rock mass) is 9.3076 million tons. Among them, geochemical blocks 5 and 6 should be used as the focus of the next step, and the exploration potential in geochemical blocks 1, 2, 3, 4 and 7 should also be noted.
- geochemical block /
- copper deposit /
- mineral resources forecast /
- Eritrea

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References

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