Geochemistry of the Jinduicheng Mo-bearing porphyry and deposit, and its implications for the geodynamic setting in East Qinling, P.R. China

Zhu, Laimin; Zhang, Guowei; Guo, Bo; Liu, Ben; Gong, Hongyu; Wang, Fei

doi:10.1016/j.chemer.2009.12.003

Cited by 73 publications

(24 citation statements)

References 67 publications

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“…Some researchers believed that the Mesozoic granites were derived from remelting of the crystalline basement of the North China Craton that is composed of the Archean Taihua Group in this region (e.g., Chen et al, 2000), whereas other workers suggested that the source rocks could be the lower crust with the involvement of the upper mantle (e.g., Luo et al, 1993;Sun and Liu, 1987;Zhang et al, 2010;Zhu et al, 2010a). A few workers argued that the ore-bearing and barren granites are genetically different, belonging to I-type and S-type, respectively (e.g., Lu et al, 2002), whereas other studies proposed that the Jurassic to Early Cretaceous granites (~150- Mao et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…In this fashion, the Jurassic to Early Cretaceous (N 131 Ma) granites are considered to be related to the transformation of the tectonic regime from NS-to nearly EWdirections in East China, i.e., a continental margin arc setting controlled by the subduction of the Izanagi or Paleo-Pacific plate beneath the Eurasian continent in a WNW-ESE direction in the Late Jurassic-Early Cretaceous, whereas the emplacement of younger granites (b131 Ma) can be ascribed to large-scale lithospheric thinning beneath the North China Craton Li et al, 2005Li et al, , 2013aMao et al, 2005Mao et al, , 2008Mao et al, , 2010Zhang et al, 2010). Other workers suggested that the Late Jurassic to Early Cretaceous granites in the East Qinling resulted from remelting of the lower crust in post-orogenic stage (Zhu et al, 2010a) or remelting of subducted crust in post-collisional setting (Bao et al, 2009a;Li et al, 2012a).…”

Section: Introductionmentioning

confidence: 99%

“…Some others propose that the carbonaceous sedimentary rocks may be the main source for the Mo mineralization (e.g., Li et al, 2012b;Zhang et al, 2010). A few researchers recognized that the upper mantle could be the major source for Mo mineralization because of high Mo concentrations of the upper mantle in the southern margin of the North China Craton (Bao et al, 2009a;Zhu et al, 2010a).…”

Section: Introductionmentioning

confidence: 99%

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Petrogenesis of the Mesozoic granites and Mo mineralization of the Luanchuan ore field in the East Qinling Mo mineralization belt, Central China

Bao

Wang

Zhao

et al. 2014

Ore Geology Reviews

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Petrogenesis of the Mesozoic granites and Mo mineralization of the Luanchuan ore field in the East Qinling Mo mineralization belt, Central China

Bao

Wang

Zhao

et al. 2014

Ore Geology Reviews

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“…The oxygen and hydrogen isotopic compositions of the quartz were determined using a Finnigan-MAT 253 mass spectrometer at the Analytical Laboratory, Beijing Research Institute of Uranium Geology. The analytical method has been described by Zhu et al (2010). Oxygen was liberated from quartz by reaction with BrF 5 (Clayton and Mayeda, 1963) and converted to CO 2 on a platinum-coated carbon rod.…”

Section: Sampling and Analytical Methodsmentioning

confidence: 99%

“…Sulfur isotope analyses were carried out using a MAT-251 EM mass spectrometer at the Analytical Laboratory, Beijing Research Institute of Uranium Geology. The detailed analytical methods used to obtain SO 2 were described by Robinson and Kusakabe (1975) and Zhu et al (2010). Sulfur isotope analyses were carried out using 200-mesh sulfides pure samples.…”

Section: Sampling and Analytical Methodsmentioning

confidence: 99%

Geology and Geochemistry Constraints on the Genesis of the NO.2 Porphyry Copper-Gold Deposit in the Xiongcun District, Gangdese Porphyry Copper Belt, Tibet, China

Yin¹

2017

Appl Ecol Env Res

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Abstract. The Xiongcun district is located in the western segment of the Gangdese porphyry copper belt (GPCB). The No.2 deposit in the Xiongcun district hosts a measured and indicated resource of 1.34 Mt copper, 76.34 t gold, and 193.78 t silver. The copper-gold mineralization of the No.2 deposit is mainly hosted in the Early Jurassic quartz diorite porphyry which intruded volcano-sedimentary rocks of the Early Jurassic Xiongcun Formation. S and Pb isotopic compositions of the ore sulfides and Re contents of molybdenite suggest a mantle source with minor contamination of subducted sediments for the ore-forming materials. Hydrogen and oxygen isotopic compositions of quartz from the quartz -sulfide veins suggest that the ore-forming fluid was a mixture of magmatic and meteoric water. Geochemical and Sr-Nd-Hf isotopic compositions of the Early Jurassic quartz diorite porphyry suggest that the mineralization of the No.2 deposit formed in an intra-oceanic island arc setting. The magmas of the Early Jurassic quartz diorite porphyry were likely sourced from partial melting of mantle with limited contamination by subducted sediments (ca. 5%). The formation of the porphyry and the No.2 deposit were related to the northward intra-oceanic subduction of the Neo-Tethys oceanic slab during the Early Jurassic.

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The formation of the Caosiyao giant porphyry Mo deposit on the northern margin of the North China Craton: Constraints from U―Pb and Re―Os geochronology, whole‐rock geochemistry, Hf isotopes, and oxygen fugacity of the magma

et al. 2018

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The Caosiyao giant porphyry Mo deposit (1.76 Mt), which is the third largest such deposit in China, is located on the northern margin of the North China Craton and associated with the Caosiyao intrusive complex that was emplaced in Archaean metamorphic rocks. The intrusive complex consists of monzogranite and coarse‐, medium‐, and fine‐grained granite porphyries that yield U―Pb ages of 148.5 ± 1.2, 146.4 ± 1.0, 144.6 ± 1.0, and 142.8 ± 3.2 Ma, respectively. Four molybdenite Re―Os model ages range from 143.1 ± 2.4 to 145.3 ± 2.1 Ma, which are consistent with the U―Pb ages for the igneous complex. The geochronological data indicate that the multistage magmatic‐hydrothermal processes were important in the formation of the Caosiyao giant deposit. The rocks of the Caosiyao granitic complex have high contents of silica (SiO2 = 71.7–75.6 wt.%) and total alkalis (mostly K2O + Na2O > 8 wt.%), low contents of CaO and MgO, and exhibit peraluminous high‐K calc‐alkaline to shoshonitic affinities. They are enriched in large‐ion lithophile elements (e.g., K, Rb, U, and Th) and light REEs and depleted in Eu, Ba, Sr, Nb, P, and Ti. The geochemical characteristics indicate advanced fractional crystallization and that the rocks are strongly fractionated I‐type granites. The negative Hf isotopic compositions of the granitic rocks, combined with old two‐stage Hf model ages, indicate the magmas were derived from partial melting of the ancient lower crust of the North China Craton. All the intrusive rocks in the complex have relatively high Ce4+/Ce3+ ratios and oxygen fugacity, which would have facilitated Mo extraction into the melts owing to the much higher solubility of S as sulphate (SO42−) than sulphide (S2−). The magma crystallization temperatures decreased from 882°C to 770°C as the magma evolved. The multistage magmatic‐hydrothermal processes, and the prolonged fractional crystallization, combined with high magma oxygen fugacity are the key factors to form the Caosiyao giant Mo deposit. The tectonic setting of deposit formation was one of extension related to rollback of the subducting Palaeo‐Pacific Plate during the Late Jurassic to Early Cretaceous.

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Geochemistry of the Jinduicheng Mo-bearing porphyry and deposit, and its implications for the geodynamic setting in East Qinling, P.R. China

Cited by 73 publications

References 67 publications

Petrogenesis of the Mesozoic granites and Mo mineralization of the Luanchuan ore field in the East Qinling Mo mineralization belt, Central China

Petrogenesis of the Mesozoic granites and Mo mineralization of the Luanchuan ore field in the East Qinling Mo mineralization belt, Central China

Geology and Geochemistry Constraints on the Genesis of the NO.2 Porphyry Copper-Gold Deposit in the Xiongcun District, Gangdese Porphyry Copper Belt, Tibet, China

The formation of the Caosiyao giant porphyry Mo deposit on the northern margin of the North China Craton: Constraints from U―Pb and Re―Os geochronology, whole‐rock geochemistry, Hf isotopes, and oxygen fugacity of the magma

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