Sulfur and copper isotopic signatures of chalcopyrite at Kalatongke and Baishiquan: Insights into the origin of magmatic Ni-Cu sulfide deposits

Tang, Dongmei; Qin, Kezhang; Su, Ben‐Xun; Mao, Yajing; Evans, Noreen J.; Niu, Yiming; Zhang, Kang

doi:10.1016/j.gca.2020.02.015

Cited by 43 publications

(21 citation statements)

References 91 publications

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“…Duan, J., Li, C., Qian, Z., Jiao, J., Ripley, E. M., and Feng, Y.. (2016). Multiple S isotopes, zircon Hf Rift System (Ripley et al 2015), Noril'sk Province (Malitch et al 2014), Eastern Gabbro (Brzozowski et al 2020), Tulaergen (Zhao et al 2017(Zhao et al , 2019, Kalatongke (Tang et al 2020), Baishiquan (Tang et al 2020) and Jinchuan (this study). The estimated initial sulfide melts and parental magma for the Jinchuan deposit are also indicated.…”

Section: Discussionmentioning

confidence: 83%

“…Numerical calculations indicate that variable R factors may be responsible for large Cu isotope fractionation in the Kalatongke, Baishiquan and Eastern Gabbro magmatic Ni-Cu deposits (e.g., Tang et al 2020;Brzozowski et al 2020). However, the formation of the Jinchuan deposit has experienced both sulfide segregation with variable R factors and subsequent sulfide-liquid fractionation (Fig.…”

Section: Diffusionmentioning

confidence: 99%

“…These observations suggest that Cu isotopes have potential as a tracer for Cu enrichment in the mantle sources of magmatic Ni-Cu deposits. To date, large δ 65 Cu variations (~4‰) in worldwide magmatic Ni-Cu deposits have been observed, including Noril'sk Province, Russia (Malitch et al 2014), Midcontinent Rift System, America (Ripley et al 2015), Eastern Gabbro, Canada (Brzozowski et al 2020), Tulaergen (Zhao et al 2017(Zhao et al , 2019, Kalatongke and Baishiquan (Tang et al 2020), China. However, the mechanism that caused these large Cu isotopic variations has not yet been well constrained.…”

Section: Introductionmentioning

confidence: 99%

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Copper isotope evidence for a Cu-rich mantle source of the world-class Jinchuan magmatic Ni-Cu deposit

Zhao

Liu

Xue

et al. 2022

American Mineralogist

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A Cu-rich mantle source may play a key role in generating giant magmatic Ni-Cu deposits worldwide, but evidence for source's Cu enrichment and its mechanism is still rare. Copper isotopes can provide novel and direct insights into this issue since metasomatism that causes Cu enrichment in the mantle is commonly associated with a huge Cu isotope fractionation. Here we present the first Cu isotopic study on the world-class Jinchuan magmatic Ni-Cu deposit in China, including disseminated, net-textured and massive sulfides. The disseminated and net-textured sulfides have variable δ 65 Cu values (+0.36 ± 0.38‰, n=42), which are higher than those of massive sulfides (−0.44 ± 0.28‰, n=11). The country rocks have a narrow This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.

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Section: Discussionmentioning

confidence: 83%

Section: Diffusionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Copper isotope evidence for a Cu-rich mantle source of the world-class Jinchuan magmatic Ni-Cu deposit

Zhao

Liu

Xue

et al. 2022

American Mineralogist

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“…The Precambrian units are intruded by Palaeozoic and Mesozoic plutons (Wang et al, 2006), some of which are related to tungsten skarn deposits, such as the Xiaobaishitou and Heiyanshan deposits (Deng et al, 2017). The CTB includes the Weiya V-Ti magnetite, Tianhu Fe, and the Caixiashan giant-size Pb-Zn deposit, and the Permian maficultramafic complexes present along the northern margin of the area, which hosts the Tianyu and Baishiquan Cu-Ni deposits (Wu et al, 2010;Yu et al, 2018;Li et al, 2019;Tang et al, 2020).…”

Section: Regional Geologymentioning

confidence: 99%

Genesis of the Heiyanshan Tungsten Skarn Deposit in the East Tianshan, NW China: Insights From Geology, Fluid Inclusion, Isotopic Geochemistry and Geochronology

et al. 2021

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The eastern Tianshan Terrane is a highly prospective zone that contains several porphyry Cu–Mo, VMS Cu–Zn, magmatic Cu–Ni, epithermal and orogenic Au deposits. However, few attention has been paid to tungsten deposits. Of these, the source and evolution of the mineralising fluids related to the skarn W deposits are poorly understood. The Heiyanshan W deposit is hosted by metamorphosed clastic and carbonate beds in the Mesoproterozoic Jianshanzi Formation deposited on a continental margin tectonic setting. The Jianshanzi Formation is intruded by biotite monzogranite that yield weighted 206Pb/238U age of 326.9 ± 1.6 Ma, which suggest that the Heiyanshan W deposit was formed in the Carboniferous. The mineralisation is hosted by a prograde hydrothermal altered zone represented by a garnet (–pyroxene) skarn, and retrograde skarn characterised by fine-grained scheelite. The paragenesis of the Heiyanshan mineralisation can be subdivided into prograde skarn stage, retrograde skarn stage, quartz-sulphide stage and quartz-calcite vein stage. The types of fluid inclusions recognised in the various minerals in the deposits are liquid-rich aqueous, vapour-rich aqueous, and daughter mineral-bearing. The homogenisation temperatures of fluid inclusions from the Heiyanshan deposit decrease from 290 ± 28°C in garnet, through 232 ± 31°C in scheelite, to 232 ± 36°C in quartz and 158 ± 15°C in non-mineralised calcite, which is typical of W-bearing skarn deposits worldwide. The δ18Owater values from the Heiyanshan deposit range from +4.7 to +6.6‰ in garnet, +1.3 to +1.9‰ in quartz and −6.1 to −4.4‰ in calcite. We have measured δD in fluid inclusions from different minerals, although these bulk analyses are just a mixture of the different FIA’s present in the sample. The δD values of fluid inclusions in garnet, quartz, and calcite are from −121 to −71‰, −84 to −75‰ and −101 to −82‰, respectively, also indicative of deep-sourced magmatic fluids mixed with meteoric water. The decrease in the homogenisation temperatures for the fluid inclusions at the Heiyanshan deposit is accompanied by a drop in salinity indicating that tungsten-bearing minerals precipitated during fluid mixing between magmatic fluids and meteoric water. We conclude that eastern Tianshan Terrane contains two pulse of tungsten metallogenic events of Late Carboniferous and Early Triassic.

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“…Several studies have been published on the genesis of the Kalatongke mafic intrusion, and they have greatly improved our comprehensive understanding of sulphide ore formation in the Kalatongke magmatic system. The Kalatongke sulphide deposit originated from metasomatic depleted mantle and primarily hosted by mafic intrusions with various ores (Duan et al, 2017; Gao & Zhou, 2013; Gao, Zhou, Lightfoot, Wang, & Qi, 2012; Gao, Zhou, Lightfoot, & Wu, 2012; Jiao et al, 2014; Kang, Qin, Mao, Tang, & Yao, 2020; Qian et al, 2009; Song & Li, 2009; Tang et al, 2020; Zhang, Mao, Chai, Yan, & Chen, 2009). The S saturation mechanism was triggered by the contamination of the surrounding rocks (Wei, Wang, Lahaye, Xie, & Cao, 2019; Zhang et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Ore‐forming mafic plutons emplaced at syn‐collisional compressive setting in Kalatongke Ni–Cu sulphide district, Southern Altay, CAOB: New evidence from the Late Carboniferous granitic porphyries

Wang

Zhang

et al. 2021

Geological Journal

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The Kalatongke deposit is the largest Ni–Cu sulphide deposit in the Central Asian Orogenic Belt (CAOB) in northern Xinjiang. The tectonic setting of the Kalatongke deposit and the collision period of the Altai and East Junggar terranes remain controversial. This study involves petrological, geochemical, and geochronological evaluations of granitic porphyries in the Kalatongke. The granitic porphyries are divided into three types according to the characteristics of petrology and geochemistry, dated at ~339, ~325, and ~310 Ma. Type‐1 granitic porphyry exhibits evident syn‐collisional characteristics, with plagioclase phenocrysts extending in one direction. This type is metaluminous (A/CNK <1.1), characterized by low SiO2 and K2O contents, and depleted in Nb, Ta, P, and Ti. Type‐2 granitic porphyry is strongly peraluminous (A/CNK >1.1) and characterized by high SiO2 and Al2O3 but low Sr contents. Type‐3 granitic porphyry is also metaluminous (A/CNK <1.1) and has high SiO2 and K2O contents. The estimated crustal thickness of the Kalatongke area increased from 40 to 55 km from 339 to 310 Ma, thereby indicating that its existence within the collisional orogeny period. According to the estimated emplacement depth of the granitic and mafic intrusions, the crust had been thickening since then. During the late collision period, lithospheric detachment caused by terrane collision resulted in asthenospheric mantle upwelling and formed regional mafic intrusions along the Irtysh fault.

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Sulfur and copper isotopic signatures of chalcopyrite at Kalatongke and Baishiquan: Insights into the origin of magmatic Ni-Cu sulfide deposits

Cited by 43 publications

References 91 publications

Copper isotope evidence for a Cu-rich mantle source of the world-class Jinchuan magmatic Ni-Cu deposit

Copper isotope evidence for a Cu-rich mantle source of the world-class Jinchuan magmatic Ni-Cu deposit

Genesis of the Heiyanshan Tungsten Skarn Deposit in the East Tianshan, NW China: Insights From Geology, Fluid Inclusion, Isotopic Geochemistry and Geochronology

Ore‐forming mafic plutons emplaced at syn‐collisional compressive setting in Kalatongke Ni–Cu sulphide district, Southern Altay, CAOB: New evidence from the Late Carboniferous granitic porphyries

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