Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic Implications
The Shimensi deposit (Northern Jiangxi, South China) is a recently discovered super-large tungsten deposit. Muscovite 40Ar/39Ar dating yielded a plateau age of 145.7 ± 0.9 Ma, with normal and inverse isochronal ages being 145.4 ± 1.4 Ma and 145.3 ± 1.4 Ma, respectively. The muscovite 40Ar/39Ar age,...
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doaj-9269a8640cc44c06aedb4394be4e43832020-11-24T21:27:51ZengMDPI AGMinerals2075-163X2017-09-017916210.3390/min7090162min7090162Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic ImplicationsWen-Feng Wei0Bing Yan1Neng-Ping Shen2Lei Liu3Yong Zhang4Xin-Kui Xiang5Institute of Earth Sciences, Chengdu University of Technology, Chengdu 610059, ChinaInstitute of Earth Sciences, Chengdu University of Technology, Chengdu 610059, ChinaState Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, ChinaState Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, ChinaSchool of Earth Sciences, East China University of Technology, Nanchang 330013, ChinaNo. 916 Geological Party, Jiangxi Bureau of Geology & Mineral Exploration, Jiujiang 332100, ChinaThe Shimensi deposit (Northern Jiangxi, South China) is a recently discovered super-large tungsten deposit. Muscovite 40Ar/39Ar dating yielded a plateau age of 145.7 ± 0.9 Ma, with normal and inverse isochronal ages being 145.4 ± 1.4 Ma and 145.3 ± 1.4 Ma, respectively. The muscovite 40Ar/39Ar age, which can represent the mineralization age, coincides well with the published zircon U–Pb ages (143–148 Ma) of the ore-hosting granites, which indicates that the tungsten mineralization was syn-magmatic. The new age reported here confirms that the Shimensi tungsten deposit is part of a large Early Cretaceous (147–136 Ma) tungsten-polymetallic belt in South China. Measured and calculated sulfur isotopic compositions (δ34Sminerals = −3.0‰ to 1.1‰, average −1.3‰; δ 34 S H 2 S = −4.5‰ to +1.2‰, average −1.8‰) of the Shimensi ore-forming fluids indicate that the sulfur was mainly magmatic-derived. The calculated and measured oxygen and hydrogen isotopic compositions ( δ 18 O H 2 O = 4.1‰ to 6.7‰, δD = −62.7‰ to −68‰) of the ore-forming fluids indicate a dominantly magmatic source with a meteoric water input. Oxygen isotopic modelling of the boiling/mixing processes indicates that the Shimensi tungsten mineralization was caused mainly by fluid mixing of magmatic hydrothermal fluid with meteoric water.https://www.mdpi.com/2075-163X/7/9/162Shimensitungsten depositmuscovite Ar-Ar datingH-O-S stable isotopesSouth China |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wen-Feng Wei Bing Yan Neng-Ping Shen Lei Liu Yong Zhang Xin-Kui Xiang |
spellingShingle |
Wen-Feng Wei Bing Yan Neng-Ping Shen Lei Liu Yong Zhang Xin-Kui Xiang Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic Implications Minerals Shimensi tungsten deposit muscovite Ar-Ar dating H-O-S stable isotopes South China |
author_facet |
Wen-Feng Wei Bing Yan Neng-Ping Shen Lei Liu Yong Zhang Xin-Kui Xiang |
author_sort |
Wen-Feng Wei |
title |
Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic Implications |
title_short |
Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic Implications |
title_full |
Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic Implications |
title_fullStr |
Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic Implications |
title_full_unstemmed |
Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic Implications |
title_sort |
muscovite 40ar/39ar age and h-o-s isotopes of the shimensi tungsten deposit (northern jiangxi province, south china) and their metallogenic implications |
publisher |
MDPI AG |
series |
Minerals |
issn |
2075-163X |
publishDate |
2017-09-01 |
description |
The Shimensi deposit (Northern Jiangxi, South China) is a recently discovered super-large tungsten deposit. Muscovite 40Ar/39Ar dating yielded a plateau age of 145.7 ± 0.9 Ma, with normal and inverse isochronal ages being 145.4 ± 1.4 Ma and 145.3 ± 1.4 Ma, respectively. The muscovite 40Ar/39Ar age, which can represent the mineralization age, coincides well with the published zircon U–Pb ages (143–148 Ma) of the ore-hosting granites, which indicates that the tungsten mineralization was syn-magmatic. The new age reported here confirms that the Shimensi tungsten deposit is part of a large Early Cretaceous (147–136 Ma) tungsten-polymetallic belt in South China. Measured and calculated sulfur isotopic compositions (δ34Sminerals = −3.0‰ to 1.1‰, average −1.3‰; δ 34 S H 2 S = −4.5‰ to +1.2‰, average −1.8‰) of the Shimensi ore-forming fluids indicate that the sulfur was mainly magmatic-derived. The calculated and measured oxygen and hydrogen isotopic compositions ( δ 18 O H 2 O = 4.1‰ to 6.7‰, δD = −62.7‰ to −68‰) of the ore-forming fluids indicate a dominantly magmatic source with a meteoric water input. Oxygen isotopic modelling of the boiling/mixing processes indicates that the Shimensi tungsten mineralization was caused mainly by fluid mixing of magmatic hydrothermal fluid with meteoric water. |
topic |
Shimensi tungsten deposit muscovite Ar-Ar dating H-O-S stable isotopes South China |
url |
https://www.mdpi.com/2075-163X/7/9/162 |
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