Fluid evolution of the Tongkuangyu porphyry copper deposit in the Zhongtiaoshan region: Evidence from fluid inclusions

Magmatic–hydrothermal evolution of highly fractionated granites: Evidence from the Kuiqi miarolite in Fujian province, SE China

“…At the early stage of the hydrothermal evolution, both pressure and temperature (700-485°C) of the intrusions drop, and the primary salinity fluid becomes saturated and separates into two phases at the end of crystallization, i.e., high salinity fluids and volatile-rich fluids, leading to widespread vapor-brine immiscibility (Audétat et al, 2008;Ramboz et al, 1982;Shan et al, 2011). Numerous boiling assemblages document that at temperatures of 400°C and 600°C the fluid was mostly in the two-phase field Jiang et al, 2014) As aforementioned, L-type inclusions include high salinity-and low salinity members. The high salinity L-type inclusions are distributed at the top to middle of the miarolitic quartz with higher filling degree, whereas the low salinity ones are mainly distributed at the middle to top of the miarolitic quartz with lower filling degree.…”

“…So the low homogenization temperatures and salinity of L-type inclusions indicate the meteoric water influx at the late stage of hydrothermal evolution (Audétat et al, 2008;Jiang et al, 2014). Thus, it is clear that the filling degrees of the vapor, temperature and salinity of the fluids decrease from the bottom to the top of the miarolitic quartz (Fig.…”

“…Fluid evolution in shallow intrusions and its genetic link with the commonly associated mineralization were documented in previous fluid inclusion studies (Audétat, 2015;Cathelineau et al, 1988;Hurtig et al, 2014;Roedder, 1984;Weisbrod, 1981). Compositions of the fluid phases and their evolution in many mineralization systems were well investigated through fluid inclusion studies (Fan et al, 2002(Fan et al, , 2003Jiang et al, 2014;Lawrence et al, 2013;Li et al, 2012;Lu et al, 2003;Poros et al, 2012;Xie et al, 2009). Fluid inclusions entrapped in crystals are by far the most representative of the fluids existed during and after crystal growth.…”

Fluid evolution of the Paleoproterozoic Hujiayu copper deposit in the Zhongtiaoshan region: Evidence from fluid inclusions and carbon–oxygen isotopes

“…Microthermometric study of fluid inclusions on 22 representative doubly polished sections was conducted. To ensure that the fluid inclusions were representative of ore formation, only fluid inclusions hosted within quartz and dolomite paragenetic with metal sulfides were chosen (Chi and Xue, 2011;Jiang et al, 2013a). Fluid inclusions in these gangue minerals trapped along the same growth zone or cluster, were interpreted to represent primary ore-forming fluids (Goldstein and Reynolds, 1994).…”

Geochronology and geochemistry of the Paleoproterozoic Fe-rich mafic sills from the Zhongtiao Mountains: Petrogenesis and tectonic implications

“…The ∼2700 Ma magmatism was synchronous with the main crustal growth phase of the NCC, whereas the ∼2500 Ma magmatism may have represented a crustal reworking event in the NCC (Zhu et al, 2013). (II) Jiangxian Group is the host rock of the Tongkuangyu Cu deposit, which is the largest Cu deposit in the TNCO (Jiang et al, 2014). Sun et al (1990) subdivided the Jiangxian Group into the Henglingguan and Tongkuangyu formations.…”