The formation of the world-class Zhuxi scheelite skarn deposit: Implications from the petrogenesis of scheelite-bearing anorthosite

Published on Jul 1, 2018in Lithos3.91
· DOI :10.1016/j.lithos.2018.05.002
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-bearing anorthosite of hydrothermal origin in a W deposit. Field, textural, mineralogical, and geochemical evidence suggest a hydrothermal genesis for the scheelite-bearing anorthosite in the Zhuxi deposit. The scheelite-bearing anorthosite formed when the Al-, Si-, P-, W-, and F-rich residual magma (fluid) was contaminated by pure limestone in a reducing environment. The formation of the scheelite-bearing anorthosite requires fertile (W-rich) metasedimentary rocks as a magmatic source, which formed granitic magma emplaced at a great depth that emanated W-enriched magmatic hydrothermal fluids during the latest stage of magma crystallization, thus producing the large-scale tungsten mineralization in the Zhuxi mine.
  • References (84)
  • Citations (3)
#1Yanbo Cheng (JCU: James Cook University)H-Index: 13
#2Jingwen Mao (China University of Geosciences)H-Index: 33
Last.Peng Liu (China University of Geosciences)H-Index: 3
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#1Bruno Scaillet (University of Orléans)H-Index: 50
#2Francois Holtz (Leibniz University of Hanover)H-Index: 48
Last.Michel Pichavant (University of Orléans)H-Index: 52
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Cited By3
#1Yuan Shi (ZJU: Zhejiang University)
#2Yixian Xu (ZJU: Zhejiang University)
Last.Bo yang (ZJU: Zhejiang University)
view all 3 authors...
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