Gold mobilization during prograde metamorphism of clastic sedimentary rocks: An example from the Liaohe Group in the Jiao–Liao–Ji Belt, North China Craton

Cui, Weilong; Guo, Jinghui; Huang, Guangqing; Wang, Zaicong; Liu, Yanhong; Yang, Jin‐Hui

doi:10.1016/j.oregeorev.2021.104624

Cited by 9 publications

(1 citation statement)

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“…Conversely, the Co/Ni ratios of Py‐oc and Py‐r range between 0.02–0.17 and 0.01–0.74, respectively, with only one spot 1.40, which argues against the hypothesis of a single magmatic‐hydrothermal origin of the metal‐bearing fluids, and instead supports metamorphic and/or epizonogenic (Chen et al, 2009) hydrothermal origin sourced from wall rocks, such as the Gaixian Formation. As the Gaixian Formation constitutes the most significant wall rock unit in this region (Cui et al, 2022; Feng et al, 2019; Yu et al, 2018; Zeng et al, 2019), it seems most plausible that the metals were scavenged from these wall rocks and then incorporated into the pyrite structure.…”

Section: Discussionmentioning

confidence: 99%

The genesis of Xindian gold deposit, Liaodong Peninsula, NE China: Constraints from zircon U–Pb ages, S–Pb isotopes, and pyrite trace element chemistry

Zeng

Frimmel

et al. 2022

Resource Geology

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The Xindian deposit is a medium tonnage (>5 tonnes of Au) quartz vein-type gold deposit located on the south-central part of the Liaodong Peninsula, China. A total of 37 auriferous quartz veins are hosted within the Paleoproterozoic metamorphic rocks of the Gaixian Formation and Late Triassic porphyritic biotite granite. Mineral paragenesis indicates that gold mineralization took place in three stages: early milky quartz-pyrite stage, main gray quartzpolymetallic sulfide and gold stage, and late quartz-calcite-pyrite stage. Silicification and pyritization are spatially and temporally associated with the main mineralization stage. Zircon U-Pb dating from dikes that predate and postdate the mineralization constrain the timing of mineralization to the Early Cretaceous, between 127.2 and 120.9 Ma. High-precision in-situ S isotope analyses yielded δ 34 S values for pyrite, sphalerite and galena of 10.

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Section: Discussionmentioning

confidence: 99%