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In situ LA-ICP-MS U–Pb geochronology and trace element analysis of hydrothermal titanite from the giant Zhuxi W (Cu) skarn deposit, South China

Published on Apr 1, 2019in Mineralium Deposita 3.37
· DOI :10.1007/s00126-018-0831-3
Shiwei Song1
Estimated H-index: 1
(PKU: Peking University),
Jingwen Mao33
Estimated H-index: 33
(PKU: Peking University)
+ 5 AuthorsYongpeng Ouyang2
Estimated H-index: 2
Abstract
The Zhuxi W (Cu) skarn deposit is the largest W deposit in the Jiangnan porphyry–skarn tungsten belt in South China, and is also among the largest deposit of this type in the world. Titanite is a common mineral in the Zhuxi deposit, and occurs in three textural settings: titanite I associated with retrograde-altered exoskarn with weak mineralization; titanite II in retrograde-altered endoskarn with disseminated Cu ore; and titanite III from altered granite with disseminated W ore. Here, we present LA-ICP-MS U–Pb data on the three types of titanite which show 207Pb-corrected weighted mean 206Pb/238U ages of 148.1 ± 7.4 Ma (n = 25, MSWD = 0.22), 148.9 ± 1.5 Ma (n = 28, MSWD = 0.37), and 149.9 ± 1.3 Ma (n = 31, MSWD = 0.28), respectively. These ages are consistent with the previously reported ages of the ore-related granite. The coeval nature of the W and Cu ores suggests that the W and Cu ores formed synchronously, and are associated with the granitoids. The Ce and Eu anomalies in the three types of titanite record redox fluctuation during the mineralization process, and suggest variable contamination of the magmatic-hydrothermal system by reduced carbonate wall-rock that contains abundant carbonaceous matter. Our study demonstrates that hydrothermal titanite commonly occurring in reduced-type W skarn deposits has potential for isotopic dating and in constraining the redox conditions for the mineralization process.
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Published on Mar 1, 2019in Mineralium Deposita 3.37
Guiqing Xie3
Estimated H-index: 3
,
Jingwen Mao33
Estimated H-index: 33
+ 2 AuthorsZhiyuan Zhang3
Estimated H-index: 3
The Caojiaba tungsten deposit (19.03 Mt@ 0.37 wt% WO3) is hosted by skarn along the contact between clastic and carbonate rocks in the Xiangzhong Metallogenic Province of southern China. The deposit is characterized by an early prograde skarn containing low andraditic garnet (Ad0.7–21.9) and hedenbergitic pyroxene (Hd52.9–77.3) overprinted by a retrograde biotite–chlorite assemblage and then by quartz–scheelite veins, similar to well-studied reduced tungsten skarns worldwide. Scheelite has low M...
7 Citations Source Cite
Published on Jul 1, 2018in Lithos 3.86
Shiwei Song1
Estimated H-index: 1
(PKU: Peking University),
Jingwen Mao33
Estimated H-index: 33
(PKU: Peking University)
+ 4 AuthorsYongpeng Ouyang2
Estimated H-index: 2
Abstract A quartz-free scheelite-bearing fine- to medium-grained anorthosite occurs as a dike in the world-class Zhuxi scheelite skarn deposit of South China. The anorthosite mainly comprises An-rich plagioclase (An avg = 91, ~90 vol%) + scheelite (~3 vol%) + apatite (~2.5 vol%) + ilmenite (~1.5 vol%) + titanite (~1 vol%), as well as minor (~2 vol%) fluorite, prehnite, chalcopyrite, pyrrhotite, pyrite, sphalerite, rutile, and uraninite. This paper reports the first occurrence of scheelite-bearin...
1 Citations Source Cite
Published on Apr 1, 2018in Lithos 3.86
Shiwei Song1
Estimated H-index: 1
(PKU: Peking University),
Jingwen Mao33
Estimated H-index: 33
(PKU: Peking University)
+ 4 AuthorsYongpeng Ouyang2
Estimated H-index: 2
Abstract The Zhuxi W-Cu deposit, located in the Jiangnan porphyry-skarn W belt, is a world-class W deposit. We studied three coeval mineralization-related intrusions composed of biotite monzogranite, fine-grained granite, and granite porphyry in the Zhuxi mine. These rocks contain peritectic garnet and K-feldspar. The LA-ICP-MS U–Pb dating of zircon from the biotite monzogranite, fine-grained granite, and granite porphyry yields average ages of 149.38 ± 0.86 Ma, 149.0 ± 1.0 Ma, and 148.30 ± 1.4 ...
3 Citations Source Cite
Published on Apr 1, 2018in Lithos 3.86
Xiaofei Pan2
Estimated H-index: 2
,
Zengqian Hou26
Estimated H-index: 26
+ 5 AuthorsYongpeng Ouyang2
Estimated H-index: 2
Abstract The giant Zhuxi tungsten deposit is located in the Taqian-Fuchun Ore Belt in northeastern Jiangxi province, and genetically associated with the Zhuxi granitic stocks and dykes. Three mineralization-related granites including granite porphyry dykes (GP), biotite granitic stocks (BG), and white granitic dykes (WG), were identified in the Zhuxi deposit. SHRIMP zircon U–Pb analysis for the three granitic rocks present ages ranging from 153.5 ± 1.0 Ma to 150.4 ± 1.0 Ma. The BG mainly contain...
4 Citations Source Cite
Published on Jan 1, 2018in Lithos 3.86
Qiangwei Su1
Estimated H-index: 1
(China University of Geosciences),
Jingwen Mao33
Estimated H-index: 33
(China University of Geosciences)
+ 2 AuthorsShengfa Xu1
Estimated H-index: 1
• The Xiaoyao deposit is a typical tungsten polymetallic skarn deposit in the newly world-class porphyry–skarn tungsten ore belt.
2 Citations Source Cite
Published on Nov 1, 2017in Ore Geology Reviews 3.99
Pan Dai2
Estimated H-index: 2
,
Jingwen Mao33
Estimated H-index: 33
+ 2 AuthorsXiaohong Luo3
Estimated H-index: 3
(NU: Northwestern University)
Abstract The Xianglushan W deposit in northwestern Jiangxi Province, South China, is one of numerous large-size W deposits along the northern margin of the Jiangnan Massif. The deposit comprises lenticular and stratiform-like orebodies, mainly along the contact between argillaceous limestone of the Cambrian Yangliugang Formation and a biotite granite pluton. The mineralization is zoned from proximal W greisen within the cupolas of the biotite granite, through W skarn and sulfide-scheelite bands ...
3 Citations Source Cite
Published on Aug 1, 2017in Lithos 3.86
Jingwen Mao33
Estimated H-index: 33
,
Bikang Xiong2
Estimated H-index: 2
+ 5 AuthorsPan Dai1
Estimated H-index: 1
Abstract The Yangchuling W–Mo deposit, located in the Jiangnan porphyry–skarn (JNB) tungsten ore belt, is the first recognized typical porphyry W–Mo deposit in China in the 1980's. Stockworks and disseminated W–Mo mineralization occur in the roof pendant of a 0.3 km 2 monzogranitic porphyry stock that intruded into a granodiorite stock, hosted by Neoproterozoic phyllite and slate. LA-ICPMS zircon U–Pb analyses suggest that of the monzogranitic porphyry and granodiorite were formed at 143.8 ± 0.5...
22 Citations Source Cite
Published on Aug 1, 2017in Mineralium Deposita 3.37
Serguei G. Soloviev6
Estimated H-index: 6
,
Sergey G. Kryazhev6
Estimated H-index: 6
The Skrytoe deposit (>145 Kt WO3, average grade 0.449% WO3) in the Sikhote-Alin orogenic system (Eastern Russia) is situated in a metallogenic belt of W, Sn-W, Au, and Au-W deposits formed in a late to post-collisional tectonic environment after cessation of active subduction. It is localized within a mineralized district of reduced-type skarn W and veined Au (±W) deposits and occurrences related to the Early Cretaceous ilmenite-series plutonic suite. The deposit incorporates large stockworks of...
6 Citations Source Cite
Published on Jun 1, 2017in Ore Geology Reviews 3.99
Xiaofei Pan2
Estimated H-index: 2
,
Zengqian Hou26
Estimated H-index: 26
+ 6 AuthorsChuan Kang1
Estimated H-index: 1
Abstract The recently discovered Zhuxi W–Cu ore deposit is located within the Taqian–Fuchun Ore Belt in the southeastern edge of the Yangtze Block, South China. Its inferred tungsten resources, based on new exploration data, are more than 280 Mt by 2016. At least three paragenetic stages of skarn formation and ore deposition have been recognized: prograde skarn stage; retrograde stage; and hydrothermal sulfide stage. Secondly, greisenization, marmorization and hornfels formation are also observe...
13 Citations Source Cite
Published on Jun 1, 2017in Ore Geology Reviews 3.99
Qiaoqiao Zhu4
Estimated H-index: 4
,
Guiqing Xie5
Estimated H-index: 5
+ 3 AuthorsZongsheng Jiang1
Estimated H-index: 1
Abstract The Jinshandian ore field represents one of the largest concentrations of Fe skarn deposits in the Edong district of Eastern China. Orebodies of these deposits occur in skarn along the contacts between quartz diorite or quartz monzonite and Triassic sedimentary country rocks. In this paper, we present new U–Pb geochronological data for magmatic zircon and hydrothermal titanite, as well as 40 Ar/ 39 Ar ages on hydrothermal phlogopite, to determine whether multiple magmatic-hydrothermal e...
4 Citations Source Cite