Monazite U-Pb Geochronology of Granites in the Shaping Tungsten Deposit, Western Nanling Metallogenic Belt and Its Geological Significance

ZHOULi-Tong; CHENJian-Feng; DUYun; LUWen; SHIJin-Jiang

doi:10.3969/j.issn.2097-0013.2022.03.010

2022 Vol. 38, No. 3

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ZHOULi-Tong, CHENJian-Feng, DUYun, LUWen, SHIJin-Jiang. 2022. Monazite U-Pb Geochronology of Granites in the Shaping Tungsten Deposit, Western Nanling Metallogenic Belt and Its Geological Significance. South China Geology, 38(3): 486-495. doi: 10.3969/j.issn.2097-0013.2022.03.010

Citation:

ZHOULi-Tong, CHENJian-Feng, DUYun, LUWen, SHIJin-Jiang. 2022. Monazite U-Pb Geochronology of Granites in the Shaping Tungsten Deposit, Western Nanling Metallogenic Belt and Its Geological Significance. South China Geology, 38(3): 486-495. doi: 10.3969/j.issn.2097-0013.2022.03.010

Monazite U-Pb Geochronology of Granites in the Shaping Tungsten Deposit, Western Nanling Metallogenic Belt and Its Geological Significance

1. Hunan Institute of Geological Survey, Changsha 410116, Hunan, China
2. Academy of Coal Geological Survey of Hunan Province, Changsha 410114, Hunan, China
3. Research Center for Petrogenesis and Mineralization of Granitoid Rocks, China Geological Survey, Wuhan 430205, Hubei, China

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Corresponding author: CHENJian-Feng

Received Date: 28 June 2022

Revised Date: 05 August 2022

Abstract

Abstract

The Shaping Tungsten deposit, situated in the northwestern part of the Miao’ershan granite batholith, Western Nanling Metallogenic Belt, occurs in the late granite intrusion stock of fine two-mica monzogranite. The ore-bearing granite stock is almost wholly W-mineralized. In this study, LA-ICP-MS monazite U-Pb isotopic dating was performed on the fine two-mica monzogranite samples to determine the ages of diagenesis and mineralization. The monazite U-Pb analysis yielded the 206Pb/238U ages of 405.0±2.1Ma, suggesting that the Shaping W deposit was formed in Late Caledonian. Our new dating results, combined with previously published ages, indicate that the W-polymetallic mineralization ages in the northwestern part of the Miao’ershan granite batholith should be between around 430 Ma to 405 Ma. The Caledonian granite in this area has experienced significant magmatic differentiation and contributed to the W enrichment, which could be the metal source for the later fine two-mica monzogranite of the Shaping deposit. The northern of the Miao’ershan batholith has great prospecting potential for Caledonian W-polymetallic deposit.
- the Shaping W deposit /
- Caledonian granite /
- diagenesis and mineralization ages /
- monazite U-Pb dating /
- northwestern Miao’ershan area

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References

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