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Volume 8
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10.3390/min8030111
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Article

Geochronology and Genesis of the Xitian W-Sn Polymetallic Deposit in Eastern Hunan Province, South China: Evidence from Zircon U-Pb and Muscovite Ar-Ar Dating, Petrochemistry, and Wolframite Sr-Nd-Pb Isotopes

by
Jingya Cao
1,2,3,
Qianhong Wu
1,*,
Xiaoyong Yang
2,*,
Hua Kong
1,
Huan Li
1,
Xiaoshuang Xi
1,
Qianfeng Huang
1 and
Biao Liu
1
1
Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education, Central South University, Changsha 410083, China
2
CAS Key laboratory of Crust-Mantle Materials and Environments, University of Science and Technology of China, Hefei 230026, China
3
Geological Survey of Anhui Province, Hefei 230001, China
*
Authors to whom correspondence should be addressed.
Minerals 2018, 8(3), 111; https://doi.org/10.3390/min8030111
Submission received: 6 February 2018 / Revised: 22 February 2018 / Accepted: 24 February 2018 / Published: 8 March 2018
(This article belongs to the Special Issue Experimental and Thermodynamical Modeling of Ore-Forming Processes in Magmatic and Hydrothermal Systems)
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Abstract

The recently explored Xitian tungsten-tin (W-Sn) polymetallic ore field, located in Hunan province, South China, is one of the largest ore fields in the Nanling Range (NLR). Two major metallogenic types appeared in this ore field, skarn- and quartz vein-type. They are distributed within Longshang, Heshuxia, Shaiheling, Hejiangkou, Goudalan, and so on. Hydrothermal zircons from two altered granites yielded U-Pb ages of 152.8 ± 1.1 Ma, and 226.0 ± 2.8 Ma, respectively. Two muscovite samples from ore-bearing quartz vein yielded 40Ar/39Ar plateau ages of 156.6 ± 0.7 Ma, 149.5 ± 0.8 Ma, respectively. Combined with the geological evidence, two metallogenic events are proposed in the Xitian ore field, with skarn-type W-Sn mineralization in Late Triassic (Indosinian) and quartz vein/greisen type W-Sn mineralization in Late Jurassic (Yanshanian). The relatively low Ce/Ce* ratios and high Y/Ho ratios in zircons from two altered granites indicate that the hydrothermal fluids of two metallogenic events are characterized by low oxygen fugacities and enrichment in F. The similar chondrite-normalized patterns between the skarn and Xitian Indosinian granites and Sr-Nd-Pb isotopic compositions of wolframite suggest that the metal sources for both types W-Sn mineralization are derived from a crustal source.
Keywords: zircon U-Pb; muscovite Ar-Ar; wolframite Sr-Nd-Pb isotopes; Xitian W-Sn deposit; Eastern Hunan zircon U-Pb; muscovite Ar-Ar; wolframite Sr-Nd-Pb isotopes; Xitian W-Sn deposit; Eastern Hunan
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MDPI and ACS Style

Cao, J.; Wu, Q.; Yang, X.; Kong, H.; Li, H.; Xi, X.; Huang, Q.; Liu, B. Geochronology and Genesis of the Xitian W-Sn Polymetallic Deposit in Eastern Hunan Province, South China: Evidence from Zircon U-Pb and Muscovite Ar-Ar Dating, Petrochemistry, and Wolframite Sr-Nd-Pb Isotopes. Minerals 2018, 8, 111. https://doi.org/10.3390/min8030111

AMA Style

Cao J, Wu Q, Yang X, Kong H, Li H, Xi X, Huang Q, Liu B. Geochronology and Genesis of the Xitian W-Sn Polymetallic Deposit in Eastern Hunan Province, South China: Evidence from Zircon U-Pb and Muscovite Ar-Ar Dating, Petrochemistry, and Wolframite Sr-Nd-Pb Isotopes. Minerals. 2018; 8(3):111. https://doi.org/10.3390/min8030111

Chicago/Turabian Style

Cao, Jingya, Qianhong Wu, Xiaoyong Yang, Hua Kong, Huan Li, Xiaoshuang Xi, Qianfeng Huang, and Biao Liu. 2018. "Geochronology and Genesis of the Xitian W-Sn Polymetallic Deposit in Eastern Hunan Province, South China: Evidence from Zircon U-Pb and Muscovite Ar-Ar Dating, Petrochemistry, and Wolframite Sr-Nd-Pb Isotopes" Minerals 8, no. 3: 111. https://doi.org/10.3390/min8030111

APA Style

Cao, J., Wu, Q., Yang, X., Kong, H., Li, H., Xi, X., Huang, Q., & Liu, B. (2018). Geochronology and Genesis of the Xitian W-Sn Polymetallic Deposit in Eastern Hunan Province, South China: Evidence from Zircon U-Pb and Muscovite Ar-Ar Dating, Petrochemistry, and Wolframite Sr-Nd-Pb Isotopes. Minerals, 8(3), 111. https://doi.org/10.3390/min8030111

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