Introduction: The abundance of Cu in the Earth’s mantle normalized to C1 and Mg is similar to the abundances of Ni and Co [1, 2]. This is surprising as Cu is much less siderophile [2] than Ni and Co. Although a lower bulk Earth abundance of Cu is expected because of its lower condensation temperature, this is not sufficient to compensate for the much lower one bar siderophility of Cu when compa...

Abstract To investigate the effect of carbon-bearing phases on release fluids in subducted serpentinites, we performed high-pressure multi-anvil experiments representative ophicarbonate assemblages over a pressure range from 2.5 GPa to 5 and 450 °C 900 °C, across antigorite-out reaction. Parallel were carbonate-free serpentinites. In all experiments, monitored and/or controlled oxygen fugacity....

The generation and migration of slab-derived fluids modulate subduction zone seismicity, arc magmatism, deep volatile cycling. However, the redox species oxygen fugacity ( f O 2 ) (hereafter expressed as log units relative to fayalite–magnetite–quartz buffer, ?FMQ) are highly debated. Here we conducted phase equilibria modeling on altered oceanic crust (AOC) serpentinites along typical geotherm...

The Sandaozhuang super-large W-Mo deposit is located in the southern margin of North China Craton, within well-known East Qinling Mo mineralization belt, and one typical skarn-type deposits China. Based on EMPA LA-ICP-MS analyses, major trace elements were presented, mineral chemistry magnetite at various stages was discussed. Combining field observations, petrography, geochemical characteristi...