Ore genesis of the Fancha gold deposit, Xiaoqinling goldfield, southern margin of the North China Craton: Constraints from pyrite Re-Os geochronology and He-Ar, in-situ S-Pb isotopes

Geodynamics of decratonization and related magmatism and mineralization in the North China Craton

“…It is worth pointing out that the newly-developed in-situ S isotopic analytical method provides a useful tool to trace the detailed mineralization processes and the sources of oreforming fluids. In-situ S isotopic analysis of sulfides from the Wangershan gold deposit in the Jiaodong Peninsula and the Baiyun gold deposit in the Liaodong Peninsula indicates that the sulfides deposited at the main mineralization stage have magmatic δ 34 S values (Hu et al, 2020;Liu J C et al, 2020;Sun G T et al, 2020). In addition, noble gas isotopes sulfides in gold deposits in the NCC were derived from mixing sources, i.e., mantle and crust (Zhang, 2002;Mao et al, 2003;Tang, 2014;Zhang et al, 2019;Feng K et al, 2020;Liu J C et al, 2020;Shen et al, 2020).…”

“…In-situ S isotopic analysis of sulfides from the Wangershan gold deposit in the Jiaodong Peninsula and the Baiyun gold deposit in the Liaodong Peninsula indicates that the sulfides deposited at the main mineralization stage have magmatic δ 34 S values (Hu et al, 2020;Liu J C et al, 2020;Sun G T et al, 2020). In addition, noble gas isotopes sulfides in gold deposits in the NCC were derived from mixing sources, i.e., mantle and crust (Zhang, 2002;Mao et al, 2003;Tang, 2014;Zhang et al, 2019;Feng K et al, 2020;Liu J C et al, 2020;Shen et al, 2020). The proven reserves of the Jiaodong gold deposits are proportional to the contents of mantle component (Tan et al, 2018).…”

“…In terms of ore-forming fluids, although a large number of H-O-C-S isotopic data show that meteoric water was intensively involved in the metallogenesis of the gold and other metal deposits, magmatic water degassed from the Mesozoic magmas plays an important role in the metallogenesis Chen Y J et al, 2009;Zeng et al, 2013Zeng et al, , 2020Liu J C et al, 2020;Sun G T et al, 2020;Hu et al, 2020). For the skarn-and porphyry-type deposits, the ore-forming fluids are mainly derived from the magmas associated with mineralization, and the ore deposits are the result of strong interaction between magmatic water and wall rock (Qin et al, 1999;Ge et al, 2007;Shen et al, 2012;Zeng et al, 2013;Wen et al, 2017;Duan et al, 2020).…”

“…For the hydrothermal gold deposits, the radiogenic isotopes (such as Sr, Nd and Pb) show that gold and other metals were derived from a variety of sources, and part of the ore-forming materials was from the granites and mafic dikes associated with the gold deposits (Yang and Zhou, 2001). The noble gas isotopes and high-precision gold contents (Zhang L C, 2002;Mao et al, 2003;Tang, 2014;Zhang et al, 2019;Liu J C et al, 2020;Shen et al, 2020;Wang et al, 2020) have further confirmed that the gold and other metals were partially derived from enriched lithospheric mantle. They were carried by the mafic magmas to the shallow depths of the crust and then participated in mineralization.…”

“…Figure 2 (Color online) Histograms of the ages of Mesozoic mineralization and magmatism in the eastern North China Craton. The data are from Huang et al (1996), Mao et al(2003), Ge et al (2007), Liu et al (2011), Shao et al (2016), Tang (2014), Wang et al (2004), Wu et al (2006), Zhang (2002), Zhai (2016), Gao and Zhao (2017) and references therein, Zhu et al (2020) and references therein, Wang et al (1998), Yang and Zhou (2000, 2001), Yang et al (2003), Zhang X O et al (2003), Hu et al (2004), Dai et al (2009), Deng et al (2015),Li et al (2003Li et al ( , 2006Li et al ( , 2008Li et al ( , 2012,Goss et al (2010),Sun J F et al (2010Sun J F et al ( , 2019Sun J F et al ( , 2020,Liu J C et al (2020) and references therein,Zhu R X et al (2012bZhu R X et al ( , 2017 ,Zhu et al (2015Zhu et al ( , 2020,Yang and Wu, (2009),Yang et al (2014),Zeng et al (2013Zeng et al ( , 2020 and references therein,Deng et al (2020),Shen et al (2012),Duan et al (2014Duan et al ( , 2020,Xu et al (2020),Wu et al (2005aWu et al ( , 2005bWu et al ( , 2007Wu et al ( , 2019 and references therein.…”