In situ SIMS U-Pb dating of hydrothermal rutile: reliable age for the Zhesang Carlin-type gold deposit in the golden triangle region, SW China

Pi, Qiaohui; Hu, Ruizhong; Xiong, Bin; Li, Qiuli; Zhong, Richen

doi:10.1007/s00126-017-0715-y

Cited by 97 publications

(38 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, other hydrothermal minerals (e.g., sericite, arsenopyrite, and rutile) were precipitated during the Indosinian Period (ca. 200-230 Ma), based on the 40 Ar- 39 Ar plateau age (sericite; [7]), the Re-Os age (arsenopyrite; [8]), and the in situ U-Pb age (rutile; [9]). The two age groups may also imply two distinct low-temperature hydrothermal events in Southwestern China.…”

Section: Discussionmentioning

confidence: 99%

“…Minerals 2019, 9,230 3 of 12 research is required on whether there were two episodes of hydrothermal or metallogenesis events during the formation of the Carlin-type gold deposits in the Dian-Qian-Gui "Golden Triangle" area in Southwestern China. Sm and Nd have similar chemical characteristics.…”

Section: Geological Settingmentioning

confidence: 99%

“…Minerals 2019, 9,230 5 of 12 submicroscopic particles, nanoparticles, and crystal lattice gold, which suggests that sulfidation took place during the main mineralization stage [34]. Sulfides formed from sulfidation consist mainly of arsenian pyrite, arsenopyrite, marcasite, and lesser orpiment, realgar (Figure 4a,b), and stibnite.…”

Section: Geological Settingmentioning

confidence: 99%

“…Minerals 2019, 9,230 6 of 12 the Johnson and Mattey® Nd standard (JMC) provided an average 143 Nd/ 144 Nd ratio of 0.511132 ± 0.000005 (2σ, n = 6). Average blanks were 0.03 ng for Sm and 0.05 ng for Nd.…”

Section: Ree Concentrations Andmentioning

confidence: 99%

“…Chen et al [8] reported ages of 204 ± 19 Ma, 206 ± 22 Ma, and 235 ± 33 Ma based on Re-Os isotopes of arsenopyrite from the Lannigou, Jinya, and Shuiyindong deposits, respectively. Pi et al [9] dated hydrothermal rutile and sericite from the Zhesang gold deposit and obtained an in situ U-Pb isochron age of 213.6 ± 4.6 Ma for rutile and a 40 Ar- 39 Ar plateau age of 215.3 ± 1.9 Ma for sericite. In addition, Sm-Nd isochron ages of 134 ± 3 Ma and 136 ± 3 Ma have been reported for calcite from the Shuiyindong gold deposit [10].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%