The Metallogenic Material Sources of Permian Karst Bauxite in Pingguo Region, Guangxi

LIUA-Sui; CHENGShun-Bo; LIRong-Zhi; WEIYi-Shi

doi:10.3969/j.issn.2097-0013.2022.03.012

2022 Vol. 38, No. 3

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LIUA-Sui, CHENGShun-Bo, LIRong-Zhi, WEIYi-Shi. 2022. The Metallogenic Material Sources of Permian Karst Bauxite in Pingguo Region, Guangxi. South China Geology, 38(3): 508-520. doi: 10.3969/j.issn.2097-0013.2022.03.012

Citation:

LIUA-Sui, CHENGShun-Bo, LIRong-Zhi, WEIYi-Shi. 2022. The Metallogenic Material Sources of Permian Karst Bauxite in Pingguo Region, Guangxi. South China Geology, 38(3): 508-520. doi: 10.3969/j.issn.2097-0013.2022.03.012

The Metallogenic Material Sources of Permian Karst Bauxite in Pingguo Region, Guangxi

1. Wuhan Center of China Geological Survey (Central South China Innovation Center for Geosciences), Wuhan 430205, Hubei, China
2. Research Center of Granitic Diagenesis and Mineralization, CGS, Wuhan 430205, Hubei, China
3. Geological Prospecting Institute of Guangxi, CMGB, Nanning 530022, Guangxi, China

Received Date: 22 September 2021

Revised Date: 05 December 2021

Abstract

Abstract

The Jingxi-Pingguo bauxite belt in western Guangxi is an important bauxite production area in China, but the source of metallogenic materials of Permian karst bauxite is not clear. Based on the 1:50,000 regional geological survey, the LA-(MC) -ICP-MS U-Pb dating and Hf isotope study of detrital zircons are used to preliminarily analyze the metallogenic material sources of Permian karst bauxite in Pingguo Nanian mining area. The results show that the detrital zircons of the two samples have the single peak ages of 259Ma and 256.5Ma, respectively, corresponding to the magmatic events during the turn of the Middle and Late Permian. The yielded zircon ε_Hf(t) values range from -1.5 to -16.2, with an average of -6.2, and the peak ages of the two-stage Hf model age are around 1.7Ga. Combined with the paleogeographic pattern of the carbonate platform in the far bank of the Pingguo area and the existence of millimeter-sized feldspar porphyry and quartz porphyry in the bauxite series, it is speculated that the metallogenic material of Permian karst bauxite in Pingguo area might have been derived from the volcanic ash of Paleo Tethys magmatic arc in the southwest.
- bauxite /
- zircon age /
- Hf isotope /
- material source /
- Pingguo area, Guangxi

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References

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