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Zircon U-Pb, molybdenite Re-Os and muscovite Ar-Ar geochronology of the Yashan W-Mo and Xiatongling W-Mo-Be deposits: Insights for the duration and cooling history of magmatism and mineralization in the Wugongshan district, Jiangxi, South China
Li, Xiaofeng1,2,3; Yi, Xiankui4; Huang, Cheng5; Wang, Chunzeng6; Wei, Xinglin7; Zhu, Yiting1,2,3; Xu, Jing1,3
2018-11-01
发表期刊ORE GEOLOGY REVIEWS
ISSN0169-1368
卷号102页码:1-17
摘要To test the impact of cooling history and prolonged hydrothermal activity on the grade and total endowment of the tungsten deposits, we obtained new and detailed geochronology from the Yashan W-Mo and the Xiatongling W-Mo-Be deposits in the Wugongshan mining district in Jiangxi Province, South China. Both deposits contain stockwork and greisen ores within contact zones between granitic plutons and wall-rock metasandstone and mudstone and within the granitic plutons. New SHRIMP U-Pb zircon analyses yielded weighted mean Pb-206/U-238 ages of 231.0 +/- 5.0 Ma and 161.5 +/- 1.8 Ma for the monzogranite and granite in the Yashan W-Mo deposit, and 154.7 +/- 1.7 Ma for the granite in the Xiatongling W-Mo-Be deposit. Three molybdenite samples from stockwork ores in the Yashan deposit and four molybdenite samples from greisen and stockwork ores in the Xiatongling W-Mo-Be deposit yielded Re-Os isochron ages of 156.0 +/- 2.8 Ma and 156.4 +/- 8.7 Ma, respectively. Two muscovite samples from greisen W-Mo ores and W-bearing stockwork in the Yashan deposit gave Ar-40/Ar-39 plateau ages of 152.77 +/- 0.78 Ma and 152.36 +/- 0.78 Ma, and two muscovite samples from greisen W-Mo-Be ores and W-Mo-bearing muscovite-quartz stockwork ores in the Xiatongling deposit gave Ar-40/Ar-39 plateau ages of 146.85 +/- 0.8 Ma and 146.31 +/- 0.75 Ma, respectively. The age data indicate that the ore forming granitic magmas were emplaced earlier at the Yashan deposit than the Xiatongling deposit, but Mo mineralization was concurrent at both deposits, and the last hydrothermal ore-forming alteration started earlier again in the Yashan deposit. The U-Pb, Re-Os and Ar-Ar geochronological data indicate that both deposits had similar durations of magmatic-hydrothermal process: 9.1 +/- 1.9 m.y. for the Yashan deposit and 8.6 +/- 1.8 m.y. for the Xiatongling deposit, but with different cooling path rate. The Yashan deposit experienced a slow cooling rate (36.4 degrees C/m.y.) followed by a moderately rapid cooling rate (48.6 degrees C/m.y.), whereas the Xiatongling deposit had an early rapid cooling rate (74.1 degrees C/m.y.) followed by a slow cooling rate (29.7 degrees C/m.y.). Unlike porphyry Cu systems, the longevity of magmatic-hydrothermal process is not likely to be a key controlling factor for the total endowment and grade of W deposits. However, our analyses show that rapid cooling rates might facilitate formation of high grade stockwork and greisen W deposits.
关键词Geochronology Magmatic-hydrothermal activity Cooling rate W-Mo-(Be) deposit Yashan Xiatongling South China
DOI10.1016/j.oregeorev.2018.08.033
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
关键词[WOS]PORPHYRY COPPER-DEPOSIT ; HYDROTHERMAL ALTERATION ; EXTENSIONAL TECTONICS ; NORTHERN CHILE ; AGES ; PROVINCE ; CONSTRAINTS ; GRANITES ; GEOCHEMISTRY ; CHRONOMETER
语种英语
资助项目National Natural Science Foundation of China[41272112] ; National Natural Science Foundation of China[41472080]
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
WOS类目Geology ; Mineralogy ; Mining & Mineral Processing
WOS记录号WOS:000453493100001
出版者ELSEVIER SCIENCE BV
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/90269
专题矿产资源研究院重点实验室
通讯作者Li, Xiaofeng
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci & Planetary, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.Jiangxi Inst Geol Explorat Mineral Resources Nonf, Nanchang 330025, Jiangxi, Peoples R China
5.Nanchang Inst Technol, Coll Hydraul & Ecol Engn, Nanchang 330099, Jiangxi, Peoples R China
6.Univ Maine, Presque Isle, ME 04769 USA
7.Jianagxi Nucl Ind Geol Bur, Nanchang 330046, Jiangxi, Peoples R China
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GB/T 7714
Li, Xiaofeng,Yi, Xiankui,Huang, Cheng,et al. Zircon U-Pb, molybdenite Re-Os and muscovite Ar-Ar geochronology of the Yashan W-Mo and Xiatongling W-Mo-Be deposits: Insights for the duration and cooling history of magmatism and mineralization in the Wugongshan district, Jiangxi, South China[J]. ORE GEOLOGY REVIEWS,2018,102:1-17.
APA Li, Xiaofeng.,Yi, Xiankui.,Huang, Cheng.,Wang, Chunzeng.,Wei, Xinglin.,...&Xu, Jing.(2018).Zircon U-Pb, molybdenite Re-Os and muscovite Ar-Ar geochronology of the Yashan W-Mo and Xiatongling W-Mo-Be deposits: Insights for the duration and cooling history of magmatism and mineralization in the Wugongshan district, Jiangxi, South China.ORE GEOLOGY REVIEWS,102,1-17.
MLA Li, Xiaofeng,et al."Zircon U-Pb, molybdenite Re-Os and muscovite Ar-Ar geochronology of the Yashan W-Mo and Xiatongling W-Mo-Be deposits: Insights for the duration and cooling history of magmatism and mineralization in the Wugongshan district, Jiangxi, South China".ORE GEOLOGY REVIEWS 102(2018):1-17.
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