Iron deposits in relation to magmatism in China

Published on Dec 1, 2015in Journal of Asian Earth Sciences2.762
· DOI :10.1016/j.jseaes.2015.09.026
Zhaochong Zhang28
Estimated H-index: 28
M. Santosh85
Estimated H-index: 85
Jianwei Li28
Estimated H-index: 28
  • References (36)
  • Citations (5)
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Abstract The Jinling complex is spatially and temporally associated with the Jinling skarn-type iron deposit. The complex is composed of biotite diorite, hornblende diorite, monzonite and quartz diorite. U–Pb dating of zircons from the biotite diorite and monzonite using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) yields ages of 126 ± 1.9 Ma and 128 ± 1.4 Ma, respectively. The unaltered rocks in the complex are characterized by variable contents of SiO 2 (54.6–65.3 wt...
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#1Tong Yao (China University of Geosciences)H-Index: 6
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Abstract The Tieshanmiao-type iron deposits in the southern North China Craton comprise two types of ores: banded pyroxene–magnetite quartzite (BMQ) and disseminated magnetite pyroxenite (DMP). Whether the quartz-poor DMP represents metamorphosed iron-bearing ultramafic rocks or chemical sedimentary rocks is still unclear. Pyroxene compositions in the DMP are low in Al 2 O 3 and TiO 2 , which are similar to those from the BMQ and altered marble and pyroxenite. However, the compositions are diffe...
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Abstract The Jingtieshan banded iron formation (BIF) is located in the Northern Qilian Orogenic Belt (NQOB) in NW China. The BIFs are hosted in Mesoproterozoic Jingtieshan Group, a dominantly clastic-carbonate sedimentary formation, and was metamorphosed to lower greenschist facies. The Jingtieshan BIFs include oxide-, carbonate- and mixed carbonate–oxide facies, and consist of alternating iron-rich and silica-rich bands. The BIFs are composed essentially of specularite and jasper, with minor ca...
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Abstract The Zhangmatun gabbro is part of the Ji’nan complex in the North China Craton. It is spatially and temporally associated with the Zhangmatun skarn-type high-grade iron deposit. U–Pb dating of zircons from the Zhangmatun gabbro yielded an age of 130.2 ± 1.8 Ma, indicating the emplacement time as Early Cretaceous. The Zhangmatun gabbro displays porphyritic texture with plagioclase and clinopyroxene as the major phenocryst phases, together with minor biotite, hornblende, and magnetite. The...
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Abstract Hosted within the metamorphosed, neritic siliciclastic rocks and sedimentary carbonates of the Proterozoic Shilu Group, the Shilu Fe–Co–Cu ore district in Hainan Province of South China comprises the upper Fe- and the lower Co–Cu ore layers. Combined with the field observation, the mineralogical and geochemical studies of sulfides using electron microprobe and laser ablation ICP-MS analyses recognized three types of Co–Cu ores. Type I is represented by massive ores and mainly comprises ...
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Abstract The Macheng iron deposit is located in the eastern Hebei province of the North China Craton (NCC). It is hosted in Neoarchean metamorphic rocks of Baimiaozi formation in the Dantazi Group, consisting of biotite-leptynite, plagioclase-gneiss, plagioclase-amphibolite, migmatite, migmatitic granite and quartz schist. Geochemical analyses of the host biotite leptynite and plagioclase amphibolites show that their protoliths are both volcanics, inferred to be trachytic basalt and basaltic and...
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In situ LA–ICP–MS trace elemental analysis has been applied to magnetite and ilmenite of the Taihe layered intrusion, Emeishan large igneous province, SW China, in order to understand better fractionation processes of magma and origin of Fe–Ti–V oxide ore deposits. The periodic reversals in Mg, Ti, Mn in magnetite and Mg, Sc in ilmenite are found in the Middle Zone of the intrusion and agree with fractionation trends as recorded by olivine (Fo), plagioclase (An) and clinopyroxene (Mg#) compositi...
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Abstract The Fushan iron ores, located in the southern part of the Taihang Mountains (TM) within the Trans-North China Orogen, is among the medium-sized skarn iron deposits in China. In this paper we report U–Pb age data on zircon grains from the magmatic intrusion related with the skarn formation and from the Neoarchean metamorphic basement in the area. The results show that the dioritic intrusion which generated the skarn mineralization was emplaced at 128.8 ± 1.9 Ma. Zircon grains from the ba...
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Abstract The high-grade magnetite ores related to banded iron formations (BIFs) in the Anshan-Benxi area, Liaoning Province in China, have been widely interpreted as the product of replacement of protore by epigenetic hydrothermal fluids. The high-grade iron ore reserves in the mining area II (164 million tons) in the Gongchangling (G2) and Qidashan-Wangjiabuzi (QW) iron deposits (11.45 million tons) are the largest deposits in the Anshan-Benxi area. We present a detailed comparison of the geolo...
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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...
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#1Xilin Zhao (Hefei University of Technology)
#1Xilin Zhao (Hefei University of Technology)
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Abstract The genesis of the Makeng Fe deposit, located in Fujian Province in southeastern China, has been the focus of numerous studies. Recent studies have revealed that the mineralization and alteration of the deposit may have occurred during the intrusion of granitic magma. In this study, we focus on the magmatic activity that has occurred in the region, as well as the geological context of the Makeng and similar deposits. We have divided the magmatic activity that occurred in the Makeng and ...
#1Changming Wang (China University of Geosciences)H-Index: 21
#2Leon BagasH-Index: 22
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Abstract Knowledge of the history of the Earth’s continents and the genesis of mineral deposits is poorly understood on a crustal-scale. This contribution combines geological and zircon Hf-isotopic data collected from igneous rocks associated with mineralisation to gain a better understanding of the nature of the growth of, and mineral genesis in the North China Craton. The new zircon U–Pb dates reported here are 2587 ± 62 Ma for syenogranite at Zanhuang in the northeast part of craton, 2552 ± 2...
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Abstract The Makeng iron deposit is located in the Yong’an-Meizhou depression belt in Fujian Province, eastern China. Both skarn alteration and iron mineralization are mainly hosted within middle Carboniferous-lower Permian limestone. Five paragenetic stages of skarn formation and ore deposition have been recognized: Stage 1, early skarn (andradite–grossular assemblage); Stage 2, magnetite mineralization (diopside–magnetite assemblage); Stage 3, late skarn (amphibole–chlorite–epidote–johannsenit...
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Abstract Most skarn deposits are closely related to granitoids that intruded into carbonate rocks. The Cihai (>100 Mt at 45% Fe) is a deposit with mineral assemblages and hydrothermal features similar to many other typical skarn deposits of the world. However, the iron orebodies of Cihai are mainly hosted within the diabase and not in contact with carbonate rocks. In addition, some magnetite grains exhibit unusual relatively high TiO 2 content. These features are not consistent with the typical ...
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#1Yanni Xuan (NU: Northeastern University)H-Index: 2
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Abstract Economic development has contributed to the rapid expansion of the Chinese iron and steel industry during the past two decades, which has resulted in numerous problems including increased energy consumption and excessive environmental pollution. Steel scrap as an important resource in the steelmaking process is attracting greater attention for its energy efficiency, low carbon emissions, and cyclic regeneration. This study examines changes in crude steel production, steel scrap consumpt...
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