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Formation of the Jinshandian Fe skarn ore field in the Edong district, Eastern China: Constraints from U–Pb and 40Ar/39Ar geochronology

Published on Jun 1, 2017in Ore Geology Reviews3.39
· DOI :10.1016/j.oregeorev.2017.01.027
Qiaoqiao Zhu4
Estimated H-index: 4
,
Guiqing Xie5
Estimated H-index: 5
+ 3 AuthorsZongsheng Jiang1
Estimated H-index: 1
Cite
Abstract
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 events associated with formation of the Fe skarn deposits in the Jinshandian ore field. The robust U–Pb zircon ages demonstrate that the quartz monzonite and quartz diorite were emplaced at 130 Ma and 127 Ma, receptively. The U–Pb and 40 Ar/ 39 Ar ages of hydrothermal titanite and phlogopite form the skarn indicate that Fe mineralization also formed at ca. 131–128 Ma, but with an additional 118 Ma hydrothermal event recorded by phlogopite. This geochronology confirms a causative linkage between granitic intrusion and skarn mineralization. The data also indicate that at least two hydrothermal events took place in the Jinshandian ore field, one at 131–128 Ma and the other at ∼118 Ma. Integrating these ages from the ore field with previous geochronological data from the broader Edong district, two regional magmatic-hydrothermal events are recognized in the Edong district after 135 Ma, with the older one at 131–127 Ma in excellent agreement with the ∼131 Ma formation age of magnetite-apatite deposits in the eastern part of Middle–Lower Yangtze River region, and the younger one at 122–118 Ma post-dating emplacement of the ca. 126 Ma A-type granite and syenite in the eastern part of Middle–Lower Yangtze River region. A detailed comparison between the Fe skarn deposits and magnetite-apatite deposits in the Middle–Lower Yangtze River region suggests that these two deposit types not only share similar alteration assemblages and association with the evaporites within the ore-forming systems, but also may have formed during the same Early Cretaceous magmatic-hydrothermal event.
  • References (74)
  • Citations (4)
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References74
Newest
Published on May 1, 2016in Lithos3.91
Shiwei Wang4
Estimated H-index: 4
(Hefei University of Technology),
Taofa Zhou16
Estimated H-index: 16
(Hefei University of Technology)
+ 5 AuthorsNoel C. White16
Estimated H-index: 16
(Hefei University of Technology)
Abstract Porphyry Cu deposits can form in intracontinental or post-collision settings; however, both the genesis of fertile magmas and the mechanism of metal enrichment remain controversial. The Shujiadian porphyry Cu deposit is located in the Tongling area of the Middle–Lower Yangtze River Valley metallogenic belt. It is hosted by the Shujiadian complex, which mainly consists of quartz diorite porphyry (143.7 ± 1.7 Ma) and pyroxene diorite (139.8 ± 1.6 Ma). They both belong to the calc-alkaline...
Published on Jan 1, 2016in Acta Petrologica Sinica1.32
Li Wei1
Estimated H-index: 1
,
Xie Guiqing1
Estimated H-index: 1
+ 4 AuthorsMineral Assessment1
Estimated H-index: 1
The Chengchao iron deposit,located in the southeastern Hubei Province,is the largest skarn iron deposit in the MiddleLower Yangtze River Valley metallogenic belt( MLYRB) and most orebodies distributed along the contact zones between the Early Cretaceous intrusions and Triassic strata. To further investigate the deposit formation mechanism,in this contribution,detailed field and microscope observation of magnetite have been focused on various locations and occurrence of ores and mineralized skarn...
Published on Dec 1, 2015in Journal of Asian Earth Sciences2.76
Zhaochong Zhang29
Estimated H-index: 29
,
M. Santosh82
Estimated H-index: 82
,
Jianwei Li25
Estimated H-index: 25
Published on Dec 1, 2015in Journal of Asian Earth Sciences2.76
Qiaoqiao Zhu4
Estimated H-index: 4
,
Guiqing Xie5
Estimated H-index: 5
+ 4 AuthorsPing Zhang1
Estimated H-index: 1
Abstract Evaporites have played important role in the formation of diverse metallic ore deposits, especially in the case of magmatic–hydrothermal deposits. However, the relationship between evaporites and skarn Fe deposit remains poorly constrained. In this contribution, we present new sulfur isotope data of pyrite, as well as the composition of halogen-rich minerals (scapolite and amphibole) in the Jinshandian skarn Fe deposit. The data are used to evaluate the evidence for incursion of evapori...
Published on Sep 1, 2015in Journal of Petrology3.38
Cyril Chelle-Michou7
Estimated H-index: 7
(University of Geneva),
Massimo Chiaradia32
Estimated H-index: 32
(University of Geneva)
+ 1 AuthorsAlexey Ulianov17
Estimated H-index: 17
(UNIL: University of Lausanne)
The petrological evolution of magmatic rocks associated with porphyry-related Cu deposits is thought to exert a first-order control on ore genesis. It is therefore critical to understand and recognize petrological processes favourable to the genesis of porphyry systems. In this study we present new petrographic, geochemical (whole-rock and mineral), and isotopic (Pb, Sr, Nd) data for rocks from the magmatic suite associated with the Eocene Coroccohuayco porphyry–skarn deposit, southern Peru. Pre...
Published on Jun 1, 2015in Ore Geology Reviews3.39
Wanting Li1
Estimated H-index: 1
(University of Bayreuth),
Andreas Audétat28
Estimated H-index: 28
(University of Bayreuth),
Jun Zhang4
Estimated H-index: 4
(China University of Geosciences)
Abstract Numerous magnetite–apatite deposits occur in the Ningwu and Luzong sedimentary basins along the Middle and Lower Yangtze River, China. These deposits are located in the contact zone of (gabbro)-dioritic porphyries with surrounding volcanic or sedimentary rocks and are characterized by massive, vein and disseminated magnetite–apatite ± anhydrite mineralization associated with voluminous sodic–calcic alteration. Petrologic and microthermometric studies on multiphase inclusions in pre- to ...
Published on May 1, 2015in Economic Geology3.29
Franco Pirajno48
Estimated H-index: 48
(Hefei University of Technology),
Taofa Zhou16
Estimated H-index: 16
(Hefei University of Technology)
In this contribution we discuss a series of porphyry and porphyry-skarn mineral systems, which constitute important metallogenic belts along major lithospheric breaks and/or collision zones that form the margins of the North China craton and the Yangtze craton. We describe a selection of porphyry and porphyry-skarn deposits in the Great Xing’an Range in northeast China, the Yanshan-Liaoning, Xilamulum belts along the northern margin of the North China craton, the Qinling orogen, and the Middle-L...
Published on Apr 1, 2015in Journal of Asian Earth Sciences2.76
Lei Yao4
Estimated H-index: 4
(China University of Geosciences),
Guiqing Xie3
Estimated H-index: 3
(Ministry of Land and Resources of the People's Republic of China)
+ 4 AuthorsNing Ding1
Estimated H-index: 1
Abstract The Edong ore district is located within the westernmost Middle–Lower Yangtze River Valley metallogenic belt (MLYRB), and hosts the largest concentration of skarn Fe deposits in China, although the origin of these deposits remains controversial. The Chengchao deposit is the largest skarn Fe deposit so far discovered within the MLYRB, and provides a good opportunity to address the debate surrounding the origin of these skarn Fe deposits. Here, we present geological, geochronological, and...
Published on Mar 1, 2015in Economic Geology3.29
Edward T. Spencer1
Estimated H-index: 1
(Imperial College London),
Jamie J. Wilkinson28
Estimated H-index: 28
(Imperial College London)
+ 1 AuthorsJose Seguel1
Estimated H-index: 1
(Codelco)
The El Teniente Cu-Mo porphyry deposit, Chile, is one of the world’s largest and most complex porphyry ore systems, containing an estimated premining resource of approximately 95 Mt Cu and 2.5 Mt Mo. Although Cu mineralization at the deposit is quite well studied, little work has focused specifically on the distribution and timing of Mo mineralization. Combined grade, vein, and breccia distribution analysis reveals that deposit-wide Mo grades of 0.01 to 0.06 wt % are strongly controlled by the a...
Published on Jan 1, 2015in Ore Geology Reviews3.39
Guiqing Xie5
Estimated H-index: 5
,
Jingwen Mao33
Estimated H-index: 33
+ 4 AuthorsHaijie Zhao3
Estimated H-index: 3
Abstract Copper and iron skarn deposits are economically important types of skarn deposits throughout the world, especially in China, but the differences between Cu and Fe skarn deposits are poorly constrained. The Edong ore district in southeastern Hubei Province, Middle–Lower Yangtze River metallogenic belt, China, contains numerous Fe and Cu–Fe skarn deposits. In this contribution, variations in skarn mineralogy, mineralization-related intrusions and sulfur isotope values between these Cu–Fe ...
Cited By4
Newest
Published on Apr 1, 2019in Mineralium Deposita3.40
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
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 prese...
Published on Mar 1, 2019in Economic Geology3.29
Wei Li (China University of Geosciences), Guiqing Xie1
Estimated H-index: 1
(Ontario Ministry of Natural Resources)
+ 2 AuthorsJiahao Zheng (SU: Southern University and A&M College)
Published on Apr 1, 2018in Ore Geology Reviews3.39
Zongsheng Jiang4
Estimated H-index: 4
,
Dachuan Wang3
Estimated H-index: 3
(China University of Geosciences)
+ 3 AuthorsFengming Li3
Estimated H-index: 3
Abstract The Awulale metallogenic belt within the Western Tianshan orogenic belt of northwestern China includes four large iron oxide deposits with a total resource of ∼1000 million metric tons (Mt) Fe. Among these, the Zhibo deposit is a large (337 Mt at 26–68 wt% Fe) volcanic-hosted magnetite deposit, where massive Ti-poor magnetite ores are hosted in the Carboniferous volcanic and volcaniclastic sequences. Here we use in situ U–Pb analyses of titanite and zircon by laser ablation ICP-MS to pl...
Published on Oct 1, 2017in Ore Geology Reviews3.39
Zhuang Duan1
Estimated H-index: 1
(China University of Geosciences),
Jianwei Li25
Estimated H-index: 25
(China University of Geosciences)
Abstract The North China craton hosts numerous iron skarn deposits containing more than 2600 Mt of iron ores, mostly with an average grade of >45 wt% Fe, which have been among the most important source of high-grade iron ores for the last three decades in China. These deposits typically form clusters and can be roughly divided into the western and eastern belts, which are located in the middle of Trans-North China orogen and to the west of the Tan-Lu fault zone in the eastern part of North China...