Geochemistry of A-type granites in the Huangshaping polymetallic deposit (South Hunan, China): Implications for granite evolution and associated mineralization

Li, Huan; Watanabe, Kenji; Yonezu, Kotaro

doi:10.1016/j.jseaes.2014.03.004

Cited by 89 publications

(44 citation statements)

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“…Magmatic rocks are widely distributed in this area, and Jurassic igneous activity played the most important role in the formation of mineral resources with multiple stages of intrusion noted at many polymetallic ore deposits (Mao et al, ; Peng et al, ; Yuan et al, ). Recent work has suggested that intensive Jurassic magmatism was related to intra‐continental extension after the Late Permian–Triassic orogeny (Gan, Wang, Qian, Bi, & He, ; Li et al, , ; Yu et al, ).…”

Section: Outline Of Geology and Ore Depositsmentioning

confidence: 99%

“…Spatial relationship of various rock bodies from the Huangshaping deposit. (a) Geological sketch map (modified from Li et al, , ; Yao et al, ). The granophyre and the granite porphyry are not exposed on the surface.…”

Section: Outline Of Geology and Ore Depositsmentioning

confidence: 99%

“…The granophyre and the granite porphyry are not exposed on the surface. (b) Level plan of 56‐m elevation (after Li et al, , ). (c) Cross‐section of Line 16 (after Li et al, , ) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Outline Of Geology and Ore Depositsmentioning

confidence: 99%

“…Previous studies mainly focused on the Sr–Nd isotopic compositions of unaltered granitoids (Ding, Ma, Lu, Zhang, & Zhang, ; Ding, Ma, Lu, Zhang, Zhang, & Gao, ; Hu et al, ) and fluid inclusions in gangue minerals (Huang et al, ; Li et al, ), leaving the altered and mineralized granitoids and metallic minerals relatively less studied. However, recent work indicates that the mineralization‐related porphyries in the Huangshaping area are A‐type granites formed during intra‐continental extension (Li, Watanabe, & Yonezu, ; Quan et al, ). The relationship between the tectonic environment and ore formation is still unclear, and studies are required to ascertain whether the various metal associations in the Huangshaping deposit developed from a single ore‐forming system or multiple, discrete ore‐forming systems.…”

Section: Introductionmentioning

confidence: 99%

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Genesis of the Huangshaping W–Mo–Cu–Pb–Zn deposit, South China: Role of magmatic water, metasomatized fluids, and basinal brines during intra‐continental extension

Palinkaš

Evans

et al. 2019

Geological Journal

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The Huangshaping world‐class W–Mo–Cu–Pb–Zn deposit formed during Jurassic intra‐continental extension in the central Nanling region (South Hunan), South China. In order to assess the role of fluids in ore genesis and the origin of polymetallic mineralization, three types of mineralized porphyries (quartz porphyry, granophyre, and granite porphyry) were studied. The multi‐method approach included whole‐rock Sr–Nd isotopic geochemistry and determination of the trace element content and gaseous and aqueous composition of ore minerals from the three stages of intrusion and ore emplacement. Geochemical results show that the Sr–Nd isotopes in these altered porphyries were strongly affected by fluid metasomatism. The 87Sr/86Sr and 147Sm/144Nd ratios for the quartz porphyry and granophyre range from 0.72894 to 0.83093 and 0.1524 to 0.2080, respectively, whereas higher and considerably more variable ratios were determined for the granite porphyry (0.90396 to 1.51943 and 0.2391 to 0.2914). These observations imply that granite porphyry‐associated W–Mo mineralization underwent more intensive fluid–rock interaction. The relatively low REE concentrations and high abundances of CH4 and H2 in the Cu ores associated with the quartz porphyry unambiguously suggest a deep‐sourced magmatic fluid for the Cu mineralization. The high REE concentrations, pronounced negative Eu anomalies, M‐type tetrad effects, and high CO2, H2O, and Ca2+ contents of the W–Mo ores associated with the granite porphyry imply that the W–Mo polymetallic mineralization was formed in a relatively oxidizing, high‐temperature environment with strong metasomatism. In contrast, the slightly negative Eu anomalies, W‐type tetrad effects, low CH4, and high F− and Cl− concentrations of the Pb–Zn ores indicate involvement of a sediment‐derived basinal brine and reducing mineralization conditions. Collectively, a three‐stage genetic model is proposed for the Huangshaping polymetallic deposit. Corresponding to initiation, development, and cessation of Jurassic intra‐continental extension, magmatic water, metasomatized fluids, and basinal brines played key sequential roles in Cu, W–Mo, and Pb–Zn mineralization.

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Section: Outline Of Geology and Ore Depositsmentioning

confidence: 99%

Section: Outline Of Geology and Ore Depositsmentioning

confidence: 99%

Section: Outline Of Geology and Ore Depositsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genesis of the Huangshaping W–Mo–Cu–Pb–Zn deposit, South China: Role of magmatic water, metasomatized fluids, and basinal brines during intra‐continental extension

Palinkaš

Evans

et al. 2019

Geological Journal

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“…South China is characterized by widely exposed granites and intensely developed mineral resources of Mesozoic age (Figure ; Cao, Wu, et al, ; Hua et al, ; Jiang & Zhu, ; Li, Li, & Li, ; Li, Myint, et al, ; Li, Watanabe, & Yonezu, ; Mao, Cheng, Chen, & Pirajno, ; Wang et al, ). The Nanling Range in the central part of South China hosts an economically important W–Sn polymetallic ore belt (Figure ; Shu, Wang, Sun, Xu, & Dai, ; Zhu et al, ) that contains more than 60% of the world's total W reserves and about 20% of the Sn reserves (Li et al, ; Mao et al, ; Sheng et al, ).…”

Section: Introductionmentioning

confidence: 99%

Mesozoic multi‐stage W–Sn polymetallic mineralization in the Nanling Range, South China: An example from the Dengfuxian–Xitian ore field

Sun

Algeo

et al. 2018

Geological Journal

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The Dengfuxian and Xitian ore fields, located in the central Nanling Range of South China, are characterized by multi‐stage W–Sn polymetallic mineralization. In this study, whole‐rock and zircon compositions in altered granites from four typical deposits in these ore fields (i.e., Dalong Pb–Zn, Xiangdong W, Gaolong fluorite, and Shaiheling Sn–Pb–Zn) were studied to constrain their fluid chemistry and mineralization history. Compared to unaltered granites at Dengfuxian and Xitian, these fluid‐altered granites are characterized by more variable SiO2 (64.2–78.4%) and lower TiO2 (0.02–0.12%), CaO (0.25–1.2%), and Na2O (0.31–2.6%) concentrations, lower ΣREE (87–156 ppm), and higher Zr/Hf (11.1–31.6) and Y/Ho (31.1–53.4) ratios, suggesting intense F‐rich fluid metasomatism. Zircon cathodoluminescence (CL), transmitted light and back‐scattered electron (BSE) imaging, laser ablation multi‐collector inductively coupled plasma mass spectrometry (LA‐MC‐ICP‐MS) trace‐element analysis, U–Pb dating, and Hf isotopes revealed a sequence of three W–Sn polymetallic mineralization stages: a Triassic stage (~220 Ma), a Jurassic stage (~150 Ma), and a Cretaceous stage (~80 Ma). The Triassic episode was associated with a highly fractionated granitic magma derived from the lower crust and contaminated by basement rocks; the magmatic fluid was affected by a high 176Hf/177Hf component from the ~770‐Ma basement and probably precipitated under high F and high fO2 conditions. The Jurassic episode was related to mantle–crust interaction and resulted in large‐scale W–Sn mineralization at decreased fO2. The Cretaceous episode was marked by Sn mineralization in a lithospheric extensional setting. We infer that basement rocks were the major source of metals for the world‐class W–Sn ore deposits in the Nanling Range of South China. This study also demonstrates that whole‐rock geochemistry of hydrothermally altered granites in combination with Lu–Hf isotopic, U–Pb dating, and trace element analyses of magmatic and hydrothermal zircons can be a useful approach to recognition of multi‐stage magmatic and mineralization processes.

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Early Cretaceous Extensional‐tectonism‐related petrology of the Gan‐Hang Belt SE China: Lingshan A‐type granite at ca. 130 Ma

et al. 2017

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A number of Late Mesozoic (ca. 130 Ma) A‐type granitic plutons have been identified in Southeast (SE) China. The Lingshan pluton, located in the Gan‐Hang Belt, is a typical one which is mainly composed of coarse‐grained biotite monzogranite in the pluton centre and medium‐ to coarse‐grained syenogranite on the margin. Zircons from three representative samples show U–Pb ages of 132.0 ± 1.3, 134.4 ± 2.1, and 133.0 ± 1.9 Ma, respectively, indicating that the Lingshan pluton were formed in the Early Cretaceous. The Lingshan granites display typical A‐type affinities, with high SiO2, K2O, Na2O + K2O, rare earth element (REE) and high field strength element (HFSE) contents, high Ga/Al and Fe# [FeOT/(FeOT + MgO)] ratios and Zr + Nb + Ce + Y contents, and apparent depletion of Ba, Sr, Ti, and Eu. The calculated zircon saturation temperatures (TZr) are high, ranging from 841 to 966 °C (mean of 886 °C). The εHf (t) values and TDM2 (Hf) of the Lingshan granites mainly vary from −3.0 to 0.2 and 1.18 to 1.38 Ga, respectively. Consistently, the εNd(t) values vary from −3.9 to −2.8 and TDM2 (Nd) range from 1.16 to 1.26 Ga. These isotopic data indicate that the Lingshan granites were likely to be generated by partial melting of Mesoproterozoic metamorphic basement rocks with the involvement of a certain amount of mantle‐derived materials. Subsequent fractional crystallization processes were also suggested during subsequent magma evolution. We propose that the ca. 130 Ma Lingshan granites together with other coetaneous A‐type granitic rocks from adjacent region indicate a back‐arc extensional setting in SE China during Early Cretaceous. The extension event might be caused by the rollback of paleo‐Pacific Plate which results in upwelling of the asthenosphere and subsequently induces a high degree partial melting of Mesoproterozoic basement sedimentary material, to generate the A‐type granitic plutons along the Gan‐Hang Belt.

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Geochemistry of A-type granites in the Huangshaping polymetallic deposit (South Hunan, China): Implications for granite evolution and associated mineralization

Cited by 89 publications

References 73 publications

Genesis of the Huangshaping W–Mo–Cu–Pb–Zn deposit, South China: Role of magmatic water, metasomatized fluids, and basinal brines during intra‐continental extension

Genesis of the Huangshaping W–Mo–Cu–Pb–Zn deposit, South China: Role of magmatic water, metasomatized fluids, and basinal brines during intra‐continental extension

Mesozoic multi‐stage W–Sn polymetallic mineralization in the Nanling Range, South China: An example from the Dengfuxian–Xitian ore field

Early Cretaceous Extensional‐tectonism‐related petrology of the Gan‐Hang Belt SE China: Lingshan A‐type granite at ca. 130 Ma

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