No genetic link between Late Cretaceous felsic dikes and Carlin-type Au deposits in the Youjiang basin, Southwest China

Zhu, Junjiang; Hu, Ruizhong; Richards, Jeremy P.; Bi, Xian‐Wu; Stern, Richard A.; Lu, Gang

doi:10.1016/j.oregeorev.2017.01.014

Cited by 52 publications

(31 citation statements)

References 39 publications

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“…The Phanerozoic history of the SCB is dominated by the generation of a giant low-temperature metallogenic domain of ∼500 000 km 2 in size, especially the Youjiang Au-As-Sb-Hg metallogenic province (e.g. Hu et al 2002Hu et al , 2017aHu & Zhou, 2012;Goldfarb et al 2014;Deng & Wang, 2015;Zhao et al 2017;Zhu et al 2017). The Youjiang Au-As-Sb-Hg province is located in the present study area and contains vein-type Sb, Hg and As deposits, and Carlin-type gold deposits that formed mainly during two episodes of mineralization at 230-190 Ma and150-130 Ma (Pi et al 2016, 2017;Hu et al 2017a,b;Zhu et al 2017).…”

Section: C Relationship Between Magmatism and Metallogenesismentioning

confidence: 99%

“…Hu et al 2002Hu et al , 2017aHu & Zhou, 2012;Goldfarb et al 2014;Deng & Wang, 2015;Zhao et al 2017;Zhu et al 2017). The Youjiang Au-As-Sb-Hg province is located in the present study area and contains vein-type Sb, Hg and As deposits, and Carlin-type gold deposits that formed mainly during two episodes of mineralization at 230-190 Ma and150-130 Ma (Pi et al 2016, 2017;Hu et al 2017a,b;Zhu et al 2017). These epigenetic (∼100-250°C) deposits are locally controlled by faults and are hosted by sedimentary rocks (Su et al 2009).…”

Section: C Relationship Between Magmatism and Metallogenesismentioning

confidence: 99%

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Geochronology of early Mesozoic diabase units in southwestern China: metallogenic and tectonic implications

et al. 2018

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Section: C Relationship Between Magmatism and Metallogenesismentioning

confidence: 99%

Section: C Relationship Between Magmatism and Metallogenesismentioning

confidence: 99%

Geochronology of early Mesozoic diabase units in southwestern China: metallogenic and tectonic implications

et al. 2018

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“…Since calcite often has multi-stage generation in hydrothermal systems, its relationship with Sb mineralization cannot be easily established using conventional optical microscope ( Morishita, 2012 ; Zhu et al., 2017 ). In this study, CL petrography, major, minor, and trace elements, C-O and Sr isotopes, further help to characterize the syn-ore calcite.…”

Section: Discussionmentioning

confidence: 99%

“…Although there are some successful examples of calcite/fluorite Sm-Nd dating (e.g. Peng et al., 2003b ), such method has certain limiting factors, such as high cost, low efficiency, unfavorable Sm/Nd ratios, and unavailability to differentiate multiple ore-forming generations ( Uysal et al., 2007 ; Zhu et al., 2017 ).…”

Section: Introductionmentioning

confidence: 99%

In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt

et al. 2020

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Summary Accurately determining the age of hydrothermal ore deposits is difficult, because of lack of suitable mineral chronometers and techniques. Here we present the first LA-MC-ICPMS U-Pb age of carbonates from hydrothermal Sb deposits. Three stages of hydrothermal carbonates from the giant South China Sb metallogenic belt were identified: (1) pre-ore dolomite (Dol-I), (2) syn-ore calcite (Cal-II), and (3) post-ore calcite (Cal-III). The U and Pb isotopic data show that Cal-II yielded a lower intercept age of 115.3 ± 1.5 Ma (MSWD = 2.0), suggesting a Sb mineralization that corresponds to an extension event occurred during the early Cretaceous in South China. Although Cal-III yielded an age of 60.0 ± 0.9 Ma (MSWD = 1.5), indicating a potential tectonothermal event occurred in this belt during the early Cenozoic. Hence, in situ U-Pb dating of calcite offers a new way to determine the age of hydrothermal ore deposits.

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“…The basin is bound to the northwest and northeast by the Mile-Shizong fault and Ziyun-Du'an fault, respectively, separating the basin from the Yangtze Craton [5,8]. The southwestern and southeastern margins of the basin are separated from the Simao and Cathaysia blocks by the Honghe and Pingxiang-Nanning faults, respectively [8,29].…”

Section: Geological Settingmentioning

confidence: 99%

Two Hydrothermal Events at the Shuiyindong Carlin-Type Gold Deposit in Southwestern China: Insight from Sm–Nd Dating of Fluorite and Calcite

et al. 2019

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The Shuiyindong Gold Mine hosts one of the largest and highest-grade, strata-bound Carlin-type gold deposits discovered to date in Southwestern China. The outcrop stratigraphy and drill core data of the deposit reveal Middle–Upper Permian and Lower Triassic formations. The ore is mainly hosted in Upper Permian bioclastic limestone near the axis of an anticline. The gold is mainly hosted in arsenian pyrite and arsenopyrite, mainly existing in the form of crystal lattice gold, submicroscopic particles and nanoparticles. Fluorite commonly occurs at the vicinity of an unconformity between the Middle–Upper Permian formations, which is proposed to be the structural conduit that fed the ore ﬂuids. Calcite commonly fills fractures at the periphery of decarbonated rocks, which contain high grade orebodies. This study aimed to verify the occurrence of two distinct hydrothermal events at the Shuiyindong, based on Sm–Nd isotope dating of the fluorite and calcite. For this purpose, rare-earth element (REE) concentrations, Sm/Nd isotope ratios, and Sm–Nd isochron ages of the fluorite and calcite were determined. The fluorite and calcite contain relatively high total concentrations of REE (12.3–25.6 μg/g and 5.71–31.7 μg/g, respectively), exhibit variable Sm/Nd ratios (0.52–1.03 and 0.57–1.71, respectively), and yield Sm–Nd isochron ages of 200.1 ± 8.6 Ma and 150.2 ± 2.2 Ma, with slightly different initial εNd(t) values of −4.4 and −1.1, respectively. These two groups of Sm–Nd isochron ages suggest two episodes of hydrothermal events at the Shuiyindong gold deposit. The age of the calcite probably represents the late stage of the gold mineralization period. The initial εNd(t) values of the fluorite and calcite indicate that the Nd was probably derived from mixtures of basaltic volcanic tuff and bioclastic limestone from the Permian formations.

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No genetic link between Late Cretaceous felsic dikes and Carlin-type Au deposits in the Youjiang basin, Southwest China

Cited by 52 publications

References 39 publications

Geochronology of early Mesozoic diabase units in southwestern China: metallogenic and tectonic implications

Geochronology of early Mesozoic diabase units in southwestern China: metallogenic and tectonic implications

In situ U-Pb Dating of Calcite from the South China Antimony Metallogenic Belt

Two Hydrothermal Events at the Shuiyindong Carlin-Type Gold Deposit in Southwestern China: Insight from Sm–Nd Dating of Fluorite and Calcite

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