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Comparative geochemical study of scheelite from the Shizhuyuan and Xianglushan tungsten skarn deposits, South China: Implications for scheelite mineralization

Published on Jun 1, 2019in Ore Geology Reviews 3.39
· DOI :10.1016/j.oregeorev.2019.04.021
Shenghua Wu1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences),
Jingwen Mao33
Estimated H-index: 33
+ 4 AuthorsWeidong Sun47
Estimated H-index: 47
(CAS: Chinese Academy of Sciences)
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Abstract
Abstract Scheelite has been analyzed from the Shizhuyuan and the Xianglushan world-class W deposits from the Nanling W–Sn region and Jiangnan W belt, respectively. The Shizhuyuan deposit consists of proximal skarn and greisen W–Sn–Mo–Bi and distal Pb–Zn–Ag veins. The Xianglushan deposit, contains layer-like sulfide–scheelite and skarn W orebodies on granite cupolas overprinted by W greisen veins. Scheelite in skarn ores from the Shizhuyuan contains higher concentrations of Mo than those in the sulfide–scheelite and skarn ores from the Xianglushan deposit, reflecting differences between oxidizing and reducing magmatic-hydrothermal fluids. Under oxidizing conditions, W is accompanied by Mo partitions into exsolved fluids to form W–Mo garnet skarns, whereas under reducing conditions, little Mo is carried by exsolved fluids to form W pyroxene skarns. Trace element patterns of scheelite from both deposits show negative Ba, Sr, Zr, and Ti, and positive Ta anomalies. Rare earth element (REE) patterns of scheelite within skarns from the Shizhuyuan deposit have negatively inclined and flat M-type tetrad patterns, and scheelite from the greisens displays flat and positively inclined M-type tetrad patterns. We infer that the fluids formed scheelite within the W skarns and greisens inherited parental magma trace element and REE characteristics (depleted Ba, Sr, Zr, and Ti, enriched Ta, negative Eu anomalies, and tetrad effects). Whereas, scheelite from sulfide–scheelite veins and skarns of the Xianglushan deposit also has W- and MW-type tetrad REE patterns. The W-type tetrad REE patterns are complementary to REE patterns from the Renjiashan granite, and the MW-type tetrad REE patterns occur during a single evolutionary stage within a complex hydrothermal environment. Sulfide mineralization can form after or before W skarns (the former like Shizhuyuan deposit and the latter like Xianglushan deposit). The formation conditions of the latter included reducing conditions and sulfide firstly supersaturated in the melt, resulting in sulfide drops which carried W aggregated on the cupolas. W skarns and greisens in both deposits underwent generally successive processes related to water supersaturation in the melt. Following a temperature decrease and crystallization, bubbles carried material changing from Si and metal to Si oxide complexes.
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Published on Apr 1, 2019in Ore Geology Reviews 3.39
Shenghua Wu1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences),
Weidong Sun47
Estimated H-index: 47
(CAS: Chinese Academy of Sciences),
Xudong Wang2
Estimated H-index: 2
(NU: Northeastern University)
Abstract The Dongyuan deposit, in the recently identified world-class porphyry–skarn W metallogenic belt, east Jiangnan Orogen, China, is characterized by a set of nearly parallel and horizontal multi-cycle orebodies within cupolas of porphyritic granodiorite. Almost every orebody from the top to the bottom shows similar vertical changes in vein morphology and mineral assemblage from ≤1 cm quartz–feldspar–scheelite–calcite veins to 1–2 cm quartz–feldspar–muscovite–scheelite veins to 2–5 cm quart...
1 Citations Source Cite
Published on Jan 1, 2018in Mineralium Deposita 3.40
Shenghua Wu1
Estimated H-index: 1
(China University of Geosciences),
Jingwen Mao33
Estimated H-index: 33
+ 2 AuthorsXudong Wang2
Estimated H-index: 2
(NU: Northeastern University)
The Shizhuyuan polymetallic deposit is located in the central part of the Nanling region, southeastern China, and consists of proximal W–Sn–Mo–Bi skarns and greisens and distal Pb–Zn–Ag veins. The sulfides and sulfosalts in the distal veins formed in three distinct stages: (1) an early stage of pyrite and arsenopyrite, (2) a middle stage of sphalerite and chalcopyrite, and (3) a late stage of galena, Ag-, Sn-, and Bi-bearing sulfides and sulfosalts, and pyrrhotite. Combined sulfide and sulfosalt...
7 Citations Source Cite
Published on Jan 1, 2018in Chemical Geology 3.62
Wen Winston Zhao3
Estimated H-index: 3
(HKU: University of Hong Kong),
Mei-Fu Zhou69
Estimated H-index: 69
(HKU: University of Hong Kong)
+ 1 AuthorsZheng Zhao4
Estimated H-index: 4
Abstract Scheelite is the main ore mineral in skarn-type tungsten deposits, and a common accessory mineral in a variety of rock-types. The Baoshan deposit in South China is one of the most important polymetallic scheelite skarn deposits in China, hosting 40,000 t of WO 3 with economic concentrations of Zn, Cu, and Ag. It is hosted by a calcic skarn that is zoned outwards mineralogically from garnet-clinopyroxene, through clinopyroxene-garnet, to wollastonite, and overprinted by retrograde minera...
12 Citations Source Cite
Published on Nov 1, 2017in Ore Geology Reviews 3.39
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 3.91
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 Jun 1, 2017in Geochimica et Cosmochimica Acta 4.26
Chan-chan Zhang6
Estimated H-index: 6
(CAS: Chinese Academy of Sciences),
Weidong Sun47
Estimated H-index: 47
(CAS: Chinese Academy of Sciences)
+ 3 AuthorsKai Wu4
Estimated H-index: 4
(CAS: Chinese Academy of Sciences)
Abstract Oxygen fugacity ( f O 2 ) is a key factor that controls the formation of porphyry Cu deposits. Porphyry Cu deposits are typically oxidized, but when and how porphyry magmas gain their high oxygen fugacity signatures, and how oxygen fugacity controls porphyry mineralization, remains obscure. To trace the origin of the high oxygen fugacity in porphyry Cu deposits, we determined trace element compositions and U-Pb ages of magmatic and inherited zircon from Dexing porphyry Cu deposit, calcu...
29 Citations Source Cite
Published on May 1, 2017in American Mineralogist 2.63
Keke Sun1
Estimated H-index: 1
(PKU: Peking University),
Bin Chen1
Estimated H-index: 1
(Hefei University of Technology)
The Shimensi deposit (South China) is a newly discovered W-Cu-Mo polymetallic deposit with a reserve of 0.76 million tones WO 3 , one of the largest tungsten deposits in the world. We report elemental and Sr-Nd isotopic data for scheelites from the giant deposit, to determine the source region and genesis of the deposit. Scheelite is the most important ore mineral in the Shimensi deposit. Trace elements (including REEs) and Nd-Sr isotopic compositions of scheelites were used to constrain the ori...
20 Citations Source Cite
Published on Apr 1, 2017in Elements 4.22
Lluis Fontboté25
Estimated H-index: 25
,
Kalin Kouzmanov16
Estimated H-index: 16
+ 1 AuthorsGleb S. Pokrovski33
Estimated H-index: 33
(University of Toulouse)
Hydrothermal ore deposits are large geochemical anomalies of sulfur and metals in the Earth’s crust that have formed at <1 to ~8 km depth. Sulfide minerals in hydrothermal deposits are the primary economic source of metals used by society, which occur as major, minor and trace elements. Sulfides also play a key role during magmatic crystallization in concentrating metals that subsequently may (or may not) be supplied to hydrothermal fluids. Precipitation of sulfides that themselves may have litt...
21 Citations Source Cite
Published on Dec 1, 2016in Lithos 3.91
Yuxiao Chen3
Estimated H-index: 3
(CAS: Chinese Academy of Sciences),
He Li10
Estimated H-index: 10
(CAS: Chinese Academy of Sciences)
+ 6 AuthorsDeru Xu11
Estimated H-index: 11
(CAS: Chinese Academy of Sciences)
Abstract The Late Mesozoic Qianlishan granitic complex in the western Nanling Range, South China is associated with the Shizhuyuan giant W–Sn–Mo–Bi polymetallic deposit. It mainly consists of three phases of intrusions, P-1 porphyritic biotite granite, P-2 equigranular biotite granite and P-3 granite porphyry. All three phases of granite contain quartz, plagioclase, K-feldspar and Fe-rich biotite. They have geochemical affinities of A-type granites, e.g., high FeO T /(FeO T + MgO) ratios (0.84–0...
31 Citations Source Cite
Published on Nov 1, 2015in American Mineralogist 2.63
Yong Tang1
Estimated H-index: 1
(CAS: Chinese Academy of Sciences),
Hui Zhang6
Estimated H-index: 6
(CAS: Chinese Academy of Sciences)
Individual crystals of zircon, from the Koktokay No. 3 granitic pegmatite vein, are variably altered and consist of three types of domains distinguished on the basis of textures and compositions. The pristine domains possess normal chondrite-normalized rare earth element (REE) patterns. Domains affected by metamictization are enriched in U and Th. The presence of abundant fractures, dense pores, and the enrichments of non-formula elements imply that these metamict domains have been altered by a ...
4 Citations Source Cite
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