Icons / Logo / Facebook Created with Sketch. Icons / Logo / Google Created with Sketch. Icons / Logo / ORCID Created with Sketch. Branding/Logomark minus Citation Combined Shape Icon/Bookmark-empty Icon/Copy Icon/Collection Icon/Close Copy 7 no author result Created with Sketch. Icon/Back Created with Sketch. Match!

A new model for porphyry W mineralization in a world-class tungsten metallogenic belt

Published on Apr 1, 2019in Ore Geology Reviews 3.39
· DOI :10.1016/j.oregeorev.2019.02.035
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)
Cite
Abstract
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 quartz–feldspar–muscovite–scheelite veins to ≥5 cm quartz veins. From the bottom to the top of each orebody in every cycle, the mole number of Al IV in K-feldspar decreases, the concentrations of Mn 2+ in calcite increases, and the mole number of OH − in muscovite decreases. These changes reflect repetitive fluctuations in the concentrations of major elements that were involved in the precipitation of minerals as well as the physicochemical conditions of fluids during vein formation in the multi-cycle orebodies. The concentrations of Mo are obviously lower in pyrite from the middle orebodies than in the top and bottom orebodies. Our data indicate that the ore-forming fluids were sourced from multi-batch fluids that were exsolved from magma. The ΣLREE/ΣHREE ratios in the scheelite decrease from the upper to lower orebodies. Similar trends are found within a single orebody from the top to the bottom of veins. These trends were due to feldspar fractionation in the magmas and ore-forming fluids, respectively, because the crystallization of feldspar tends to capture LREEs. Therefore, the following model is proposed for the formation of the Dongyuan porphyry W deposit: the magma crystallized first at the roof of the intrusion, causing the underlying magmas to become oversaturated in H 2 O; the exsolved H 2 O then accumulated at the boundary between the crystallized upper part and the underlying magmas; as fluid pressures increased, cracks formed in the overlying crystallized granodiorite, and as a consequence the first cycle of vein networks was formed. This process was repeated as the interface between magma and crystallized rock moved downwards, thus forming the multi-cycle W orebodies that are embedded in the pluton.
  • References (74)
  • Citations (1)
Cite
References74
Newest
Published on Aug 1, 2018in Ore Geology Reviews 3.39
Weile Song2
Estimated H-index: 2
(CAS: Chinese Academy of Sciences),
Jun-Ming Yao12
Estimated H-index: 12
(CAS: Chinese Academy of Sciences)
+ 5 AuthorsChun-Kit Lai11
Estimated H-index: 11
(UTAS: University of Tasmania)
Abstract The newly discovered giant Dahutang W–Cu–Mo deposit in the central part of the Jiangnan Orogen hosts an estimated resource of 1.1 million tons (Mt) of WO 3 , plus a proven resource of 0.65 Mt Cu and 0.08 Mt Mo. The Dahutang deposit is temporally and spatially associated with the Late Mesozoic S-type granites emplaced into the Neoproterozoic Jiuling granodiorite batholith and the Shuangqiaoshan Group. Based on petrographic observations, eight hydrothermal alteration/mineralization stages...
Published on Aug 1, 2018in Ore Geology Reviews 3.39
Xiao-Yu Li1
Estimated H-index: 1
(NU: Nanjing University),
Jian-Feng Gao27
Estimated H-index: 27
(CAS: Chinese Academy of Sciences)
+ 3 AuthorsJin-Wei Wu2
Estimated H-index: 2
(NU: Nanjing University)
Abstract The Late Triassic Muguayuan W deposit is located in the middle of the Jiangnan Orogen, South China. This deposit is characterized by veinlet-disseminated W mineralization that developed in the Sanxianba granitic porphyry stock. The ore minerals are mainly scheelite with minor molybdenite and wolframite. Scheelite mineralization was closely related to greisenization and phyllic alteration, and took place in two stages. Stage I involved scheelite ± wolframite ± molybdenite + quartz veinle...
Published on Jul 1, 2018in Journal of Asian Earth Sciences 2.76
Chao Li2
Estimated H-index: 2
,
Li-min Zhou3
Estimated H-index: 3
+ 4 AuthorsWenjun Qu2
Estimated H-index: 2
Abstract Scheelite is one of the main ore minerals in tungsten deposits, and Sr isotopic compositions of scheelite can be used to examine the petrogenesis of igneous rocks and fluid metasomatism in mineralization processes. Both thermal ionization mass spectrometer (TIMS) and femsecond laser ablation multi-collector inductively coupled plasma mass spectrometer (fs-LA-MC-ICP-MS) have been applied to analyze Sr isotopic compositions in scheelite. Here we describe a LA-MC-ICP-MS technique which can...
Published on May 1, 2018in Ore Geology Reviews 3.39
Lipeng Zhang7
Estimated H-index: 7
(CAS: Chinese Academy of Sciences),
Rongqing Zhang12
Estimated H-index: 12
(CAS: Chinese Academy of Sciences)
+ 6 AuthorsWeidong Sun47
Estimated H-index: 47
Abstract Numerous Late Cretaceous W–Sn deposits associated with granitic rocks were developed in the southern part of South China. However, the relationship among granitic magma, mineralization and tectonic setting remains disputed. The Yingwuling W–Sn deposit is spatially associated with K-feldspar granite and biotite granite in the southwestern part of Guangdong province, South China. LA-ICP-MS zircon U–Pb dating of K-feldspar granite, biotite granite and weathered ore-bearing granites yielded...
Published on Apr 1, 2018in Ore Geology Reviews 3.39
Weile Song2
Estimated H-index: 2
(CAS: Chinese Academy of Sciences),
Jun-Ming Yao12
Estimated H-index: 12
(CAS: Chinese Academy of Sciences)
+ 5 AuthorsFred Jourdan34
Estimated H-index: 34
(Curtin University)
Abstract The connection between prolonged granitic magmatism and the formation of giant tungsten (W) polymetallic deposits has long been disputed. In this study, we present 6 mica Ar–Ar plateau ages and 22 molybdenite Re–Os model ages data on the newly discovered giant Dahutang W–Cu–Mo deposit in South China, which is one of the largest W deposits in the world. New and published zircon U–Pb, mica Ar–Ar, and molybdenite Re–Os age data reveal that the Mesozoic Dahutang magmatism and mineralization...
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...
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...
Published on Oct 1, 2017in Ore Geology Reviews 3.39
Yangyang Wang1
Estimated H-index: 1
(GAU: University of Göttingen),
Alfons van den Kerkhof12
Estimated H-index: 12
(GAU: University of Göttingen)
+ 4 AuthorsYinggeng Wang1
Estimated H-index: 1
Abstract We report petrological, cathodoluminescence (CL), major and trace element analyses and fluid inclusion studies on scheelite (W)-mineralized granodiorite porphyries from Dongyuan and Zhuxiling, southern Anhui Province (China). In Dongyuan, the larger part of the granodiorite porphyry body is mineralized with W concentrations up to 1140 g/t (total WO 3 reserves >140 000 tonnes), whereas in Zhuxiling mineralization is spatially more limited. All mineralized rocks are strongly altered, cont...
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...
Published on Jul 1, 2017in Lithos 3.91
Huangling Gu3
Estimated H-index: 3
(USTC: University of Science and Technology of China),
Xiaoyong Yang19
Estimated H-index: 19
(USTC: University of Science and Technology of China)
+ 2 AuthorsLei Liu8
Estimated H-index: 8
(USTC: University of Science and Technology of China)
Abstract The Early Cretaceous Yangshan granite is an A-type granitic intrusion that was emplaced along the eastern Jiangnan Orogen in southern Anhui Province, South China. The Yangshan intrusion mainly consists of syenite porphyry (127.0 ± 0.6 Ma) and alkali-feldspar granite porphyry (126.0 ± 1.0 Ma). As a part of Qingyang–Jiuhuashan complex intrusion, the Yangshan A-type granites have lower MgO, CaO, Co, Sr, and higher Rb, Nb, Th and HREE contents, with enrichment in large-ion lithophile elemen...
Cited By1
Newest
Published on Jun 1, 2019in Ore Geology Reviews 3.39
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)
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 s...