Evidence of fluid inclusions for two stages of fluid boiling in the formation of the giant Shapinggou porphyry Mo deposit, Dabie Orogen, Central China

Mineralogy, Fluid Inclusion, and Hydrogen and Oxygen Isotope Studies of the Intrusion‐Related Yangla Cu Deposit in the Sanjiang Region, SW China: Implications for Metallogenesis and Deposit Type

“…10). This proposal is also provided by previous studies that reported the immiscibility between brine and lowsalinity vapor, which is evident by the coexistence of Type-S and Type-V inclusions in skarn systems (Roedder, 1971;Ni et al, 2015). In addition, the formation of skarn minerals (e.g.…”

Re–Os and Sr–Nd–Pb isotope constraints on source of fluids in the Zhifang Mo deposit, Qinling Orogen, China

“…During the hydrothermal processes or fluid-rock interactions, radiogenic Pb isotopes ( 208 Pb, 207 Pb and 206 Pb) were preferentially leached out from the rocks and incorporated into the fluids, analogous to the commonlyobserved stepwise leaching effect in Pb isotope analysis (Frei et al, 1998;Peng et al, 2006). This would lead to generally higher Pb isotope ratios of the sulfides from the ores as compared to the majority of samples from the ore-forming rocks (Deng et al, 2013a;Ni et al, 2015). Thus, we conclude that the ore-forming fluids of the Zhifang deposit were likely sourced from the dehydration of the Taihua Supergroup and Xiong'er Group (Fig.…”

“…Ore deposits that involve significant mantle materials and/or subducted oceanic slab can be expected to show overall higher Re concentrations (generally N100 ppm) in the associated molybdenite. In contrast, ore deposits originating from continental crustal rocks or organic-poor sedimentary sequences generally have lower Re concentrations in the associated molybdenite (generally b 50 ppm) (Mao et al, 1999;Stein et al, 2001a;Mi et al, 2015;Ni et al, 2015). The Huanglongpu Mo deposit associated with carbonatite dykes which reflect the composition of their mantle source are characterized by high Re contents (278-289 ppm; Stein et al, 1997).…”

Isotope (S–Sr–Nd–Pb) constraints on the genesis of the ca. 850 Ma Tumen Mo–F deposit in the Qinling Orogen, China

“…The geological and geochemical characteristics of the deposit are similar to those of magmatic hydrothermal Mo systems both in the Qinling-Dabie Orogen, and in other parts of the world (Chen and Santosh, 2014;Zhang and Li, 2014;Wu et al, 2014). Examples of Mesozoic magmatic hydrothermal Mo systems include Yuchiling (Li et al, 2012b), Nannihu (Yang et al, 2012), Shangfanggou (Yang et al, 2013a), Jinduicheng (Zhu et al, 2010), Tangjiaping (Chen and Wang, 2011), Yaochong , Qian'echong (Yang et al, 2013b;Mi et al, 2015), and Shapinggou (Ni et al, 2015). Therefore, the deposit of this study can be classified as magmatic hydrothermal vein system related to magmatism associated with the emplacement of Neoproterozoic syenite.…”