Source characteristics and fluid evolution of the Beiyingxigou Pb–Zn–Ag deposit, central North China Craton: An integrated stable isotope investigation

Xiao, Wang; Li, Shengrong; Santosh, M.; Gan, Haonan; Sun, Weidong

doi:10.1016/j.oregeorev.2013.02.003

Cited by 10 publications

(4 citation statements)

References 45 publications

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“…This suggests that the orebody and the quartz diorite porphyry both originated in the lower crust with the addition of some mantle materials. In contrast, the Pb values of the Fuping Complex are distributed below the lower‐crust line, which implies that melting of the basement rocks also contributed Pb to the Mesozoic intrusives (Wang et al ., ). This resulted in the orebody and quartz diorite porphyry values shifting to crust–mantle mixed compositions.…”

Section: Discussionmentioning

confidence: 97%

Stable Isotopic Geochemical and Geochronological Constraints on the Formation of theShihu Gold Deposit: The Intracontinental Metallogeny of theTaihangTectonic Belt, EasternChina

Wang

Song

et al. 2015

Resource Geology

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The Early Cretaceous Shihu gold deposit is located in the northern segment of the Taihang Tectonic belt, which extends across the central part of the North China Craton. The deposit is hosted predominantly by the Archean metamorphic crystalline units, and is spatially and temporally related to quartz diorite porphyry present extensively throughout the gold deposit. We studied the geology, geochronology and stable isotopic geochemistry. Zircon U-Pb LA-ICP-MS ages of the quartz diorite porphyry at deposit range from 134 ± 1 to 131 ± 2 Ma, which are coeval and probably genetically related to the mineralization. The majority of the sulfides of the gold deposit have δ 34 S values ranging from −1 to 2‰, which suggest an homogeneous magmatic source. In addition, the isotopic compositions of δ 18Ofluid and δ 18Dfluid vary from 2.1 to 7.0‰ and −93 to −65‰, respectively, suggesting that the magmatic fluids mingled with meteoric water. The Pb isotopic analyses reveal that both the ore-forming materials and the quartz diorite porphyry originated from the lower crust and may have been mixed with mantle material. The Nd)i ratios for the quartz diorite porphyry demonstrate that there was mixing of two end-member (crust and the mantle) isotopic compositions. These results suggest that the ore-forming fluids and materials were derived from lower-crustal melting induced by mantle processes. Processes associated with the formation of the Shihu gold deposit differ significantly from those that characterize orogenic gold deposits, and instead are representative of formation in an intracontinental tectonic environment.

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Section: Discussionmentioning

confidence: 97%

Stable Isotopic Geochemical and Geochronological Constraints on the Formation of theShihu Gold Deposit: The Intracontinental Metallogeny of theTaihangTectonic Belt, EasternChina

Wang

Song

et al. 2015

Resource Geology

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“…A regular trend of isotopic fractionation of sulphur isotopes exists among coexisting sulphide minerals. For example, in many types of polymetallic deposits the order of the δ 34 S enrichment is: δ 34 S pyrite > δ 34 S sphalerite > δ 34 S chalcopyrite > δ 34 S galena (Sakai, ; S. R. Li et al ., ; Wang et al ., ); therefore δ 34 S pyrite may be the best sulphide minerals to reflect the origin of the ore‐forming materials.…”

Section: Discussionmentioning

confidence: 99%

“…b), is one of the Yanshanian (Jurassic to Cretaceous) intrusions in the central Taihang Mountain region within the TNCO. Several other granitoid plutons also occur in this region including the Sunzhuang, Dahenan, Wang'anzhen and Chiwawu intrusions with associated gold, silver, and polymetallic ore deposits (Cao et al ., , ; Dong et al ., ; Q. Li et al ., ; Li et al ., ; S. R. Li et al ., ; Li and Santosh, ; Sun et al ., ; Wang et al ., ; Zhu et al ., ).…”

Section: Regional Geological Settingmentioning

confidence: 99%

Isotope geochemistry and Re–Os geochronology of the Yanjiagou Mo deposit in the central North China Craton

Sun

Santosh

et al. 2014

Geological Journal

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The Yanjiagou deposit, located in the central North China Craton (NCC), is a newly found porphyry-type Mo deposit. The Mo mineralization here is spatially associated with the Mapeng batholith. In this study, we identify four stages of ore formation in this deposit: pyrite phyllic stage (I), quartz-pyrite stage (II), quartz-pyrite-molybdenite stage (III), which is the main mineralization stage, and quartz-carbonate stage (IV). We present sulphur and lead isotope data on pyrite, and rhenium and osmium isotopes of molybdenite from the porphyry deposit and evaluate the timing and origin of ore formation. The δ 34 S values of the pyrite range from -1.1‰ to À0.6‰, with an average of À0.875‰, suggesting origin from a mixture of magmatic/mantle sources and the basement rocks. 187 Os = 0.0032 ± 0.0012 ppb) is computed, which reveals a close link between the Mo mineralization and the magmatism that generated the Mapeng batholith. The age is close to the zircon U-Pb age of ca. 130 Ma from the batholith reported in a recent study. The age is also consistent with the timing of mineralization in the Fuping ore cluster in the central NCC, as well as the peak time of lithosphere thinning and destruction of the NCC. We evaluate the spatio-temporal distribution of the Mo deposits in the NCC and identify three important molybdenum provinces along the northern and southern margins of the craton formed during three distinct episodes: Middle to Late Triassic (240-220 Ma), Early Jurassic , and Late Jurassic to Early Cretaceous (150-125 Ma). The third period is considered to mark the most important metallogenic event, coinciding with the peak of lithosphere thinning and craton destruction in the NCC.

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“…130 Ma . The timing of mineralization in the Beiyingxigou lead-zinc-silver deposit might be 30 million years later than the Mapeng Pluton (100.2 ± 1.5 Ma, Wang et al 2013). The timing of mineralization in the other deposits has not been investigated as yet.…”

Section: Introductionmentioning

confidence: 99%

Stable isotopes and noble gases in the Xishimen gold deposit, central North China Craton: metallogeny associated with lithospheric thinning and crust–mantle interaction

Santosh

2013

International Geology Review

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Quartz-vein type gold mineralization at Xishimen is a recently discovered gold deposit in the central North China Craton. More than 50 auriferous quartz veins occur in this region within a NNW-SSE-trending fault zone 4600 m in length and 3-10 m wide. Wall rocks are mainly Precambrian tonalite-trondhjemite-granodiorite (TTG) gneisses and associated supracrustals, modified by K-feldspathization and pyrite-phyllic hydrothermal alteration. Based on detailed field and petrographic studies, we identify five episodes of mineralization: pyrite-phyllic stage (I), coarse-grained pyrite-milky white quartz stage (II), fine-grained smoky grey quartz-pyrite stage (III), fine-grained smoky grey quartz-polymetallic sulphide stage (IV), and quartz-carbonate stage (V). We present results of δ 34 S analysis of sulphide minerals from the different stages which show tightly clustered values in the range of -1.0‰ to 2.1‰, close to those of mantle and meteorite sulphur. Lead isotopic ratios of pyrite from the early to main stages also show restricted ranges with 206 Pb/ 204 Pb of 16.289-17.286, 207 Pb/ 204 Pb of 15.217-15.453, 208 Pb/ 204 Pb of 37.012-38.232, implying lower crustal input. 3 He/ 4 He and 40 Ar/ 36 Ar ratios of fluid trapped in pyrite are 0.68 Ra to 1.20 Ra (where Ra is the 3 He/ 4He ratio of air = 1.4 × 10 −6 ) and 540.9-1065, respectively. 3 He and 4 Ar concentrations vary from 10.05 to 18.5 (10 −7 cm 3 STP/g) and 6.15 to 17.4 (10 −7 cm 3 STP/g), respectively, with calculated mantle helium ranging from 8.47% to 14.96% (average 11.01%). δ 18 O Q and δ 18 D Q values of quartz range from 8.0‰ to 13.2‰ and -101.9‰ to -70.5‰, respectively, with calculated δ 18 O W values of the mineralizing fluid ranging from 1.11‰ to 5.72‰, suggesting the mixing of magmatic aqueous fluid with meteoric water during gold precipitation. We correlate the mixed crust-mantle signature of the ore-forming sources to magmatism and metallogeny associated with Mesozoic inhomogeneous lithosphere thinning in the central North China Craton.

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Source characteristics and fluid evolution of the Beiyingxigou Pb–Zn–Ag deposit, central North China Craton: An integrated stable isotope investigation

Cited by 10 publications

References 45 publications

Stable Isotopic Geochemical and Geochronological Constraints on the Formation of theShihu Gold Deposit: The Intracontinental Metallogeny of theTaihangTectonic Belt, EasternChina

Stable Isotopic Geochemical and Geochronological Constraints on the Formation of theShihu Gold Deposit: The Intracontinental Metallogeny of theTaihangTectonic Belt, EasternChina

Isotope geochemistry and Re–Os geochronology of the Yanjiagou Mo deposit in the central North China Craton

Stable isotopes and noble gases in the Xishimen gold deposit, central North China Craton: metallogeny associated with lithospheric thinning and crust–mantle interaction

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