Noble Gas Isotopic Data from Fluid Inclusions Contained in the Te-bearing Adularia-Sericite Epithermal Au-Ag Deposits in a Calc-Alkaline Magmatic Arc, NE China

The contents of this data release represent the results of the noble gas composition analysis and are presented in support of the planned publication Gao et al., 2023, titled Lead and noble gas isotopic constraints on the origin of Te-bearing adularia-sericite epithermal Au-Ag deposits in a calc-alkaline magmatic arc. Tellurium (Te)-bearing adularia-sericite epithermal Au-Ag deposits are widely distributed in calc-alkaline magmatic arcs and are an important current and future source of precious and critical metals. However, the source of ore-forming fluids in these deposits remain unclear due to the lack of isotopic evidence on Au-, Ag-, and Te-bearing minerals. To advance understanding of the source of Te and precious metals, He, Ne, and Ar isotope analysis were performed on gases extracted from fluid inclusions contained in ore and gangue minerals from two Te-rich (Sandaowanzi and Yongxin, Xing’an Block) and two Te-poor (Dong’an, Songliao Block, and Tuanjiegou, Jiamusi Massif) epithermal Au-Ag deposits that occur in an early Cretaceous magmatic arc in the North Heilongjiang Belt, northeastern China. Samples were collected by Shen Gao (see Gao et al. 2022) and were analyzed at the U.S. Geological Survey Noble Gas Laboratory by Andrew Hunt from August 2019 to March 2020.

Reference
Gao, S., Hofstra, A.H., Qin, K., Xu, H., 2022, A case of Te-rich low-sulfidation epithermal Au-Ag deposits in a calc-alkaline magmatic arc, NE China, Ore Geology Reviews, v. 151, 105158, https://doi.org/10.1016/j.oregeorev.2022.105158.