... to 0.27‰. The δ 65 Cu values of coeval Early Cretaceous andesite and basaltic andesite range from 0.01 to 0.11‰, while coeval Early Cretaceous dacite and granodiorite have higher values ranging from 0.33 to 0.52‰. Table 1. Copper isotope composition of whole rocks and chalcopyrite from...

... between color intensity and copper concentration (Fig.  2 ), consistent with results from previous studies ( Hofmeister and Rossman 1985 ; Krzemnicki 2004 ). Measured Cu concentrations ranged from 65 to 169 ppmw (parts per million by weight) in the green and red zones but were <10 ppmw...

...Yun Zhao; Shui-Jiong Wang; Chunji Xue; Matthew J. Brzozowski Abstract The mechanisms that concentrated metals in the world’s single largest nickel–copper–platinum-group element (Ni–Cu–PGE) sulfide deposit, the Jinchuan deposit in northwestern China, remain enigmatic. Nickel and Cu isotopes...

...V.V. Akimov; D.N. Babkin; O.Yu. Belozerova Abstract —In this work, based on structural and phase analysis data, we consider the behavior of Au nanoparticles (NP) during the formation of interphase boundaries between quartz and copper and iron selenides upon annealing at 450 °C and different...

... as oxidation of Cu(0) (native copper) and Cu(I) in Cu ± Cu 2 O + HCl systems at temperatures of up to 800 °C and pressures of up to 200 MPa; (2) related to Cu-Au alloying processes in the Cu + NaCl/HCl system at 600 °C and 150 MPa; (3) to evaluate the influences of different sampling techniques (ex situ vs...

... are overprinted by epithermal mineralization, including arsenopyrite. At the central Ulaan project, ~3 km northwest of Bayan Khundii, intense quartz-white mica-pyrite alteration is widespread at surface, including tourmaline bodies and local copper anomalies, associated with nearby residual quartz and related...

... as a dextral transcurrent fault during a D 3 deformation event. Copper-zinc-silver prospects and minor occurrences are abundant in the Powell block northwest of the Joliet breccia ( Fig. 2 ). Although all were studied in detail, only the Powell F-zone and Powell D-zone ( Fig. 6 ) data are presented...

... and Gustafson 1976 ; Taylor 1997 ; Hoefs 2009 , 2018 ). Copper isotopes have been used to track diverse geological processes, such as fluid extraction from the source ( Zhou et al. 2013 ; Guo et al. 2020 ; Zhao et al. 2024 ), vapor-liquid separation ( Seo et al. 2007 ; Rempel et al. 2012 ; Gregory...

... experiments revealed nanoscale particles composed of Au, Cu–Fe and Cu–other elements in the geogas captured above the ore bodies of the deposit. Furthermore, Cu–nanoscale particles retain the isotopic composition of copper found in both the oxidation zone and deep copper ores. The geogas samples exhibited...

...Ganglan Zhang; Yinan Deng; Fang Chen; Ming Li; Jun Cao; Hongfei Lai; Yangtao Zhu; Shengxiong Yang; Qianyong Liang; Zenggui Kuang; Yunxin Fang; Yufei Liu; Xuexiao Jiang; Mingyu Zhao Abstract Copper-zinc isotopic excursions in carbonate sedimentary successions are used to trace oceanic chemistry...

... components, namely, platinum, osmium, sulfur, and copper, which are important indicators of magmatic and hydrothermal processes. In contrast to the Re–Os isotope system, the radiogenic Pt–Os isotope system, as well as stable isotopes of Cu and S in PGE deposits, are still relatively understudied. Our...

...), antimony, arsenic, beryllium, bismuth, caesium, copper, chromium, cobalt, gallium, germanium, gold, graphite (natural), hafnium, helium, indium, lithium, molybdenum, nickel, niobium, phosphate, platinum group metals (PGMs), potash, rare earth elements (REEs), rhenium, rubidium, scandium, selenium, silver...

...) This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License ( http://creativecommons.org/licenses/by/4.0/ ) clay fraction geochemistry UltraFine+ gold copper lithium Pilbara Yilgarn regolith CSIRO MIRWA M0462 and M0462a As part...

..., it is also used in electroplating and in the production of alloys used in magnets, high- T steels, and jet engines ( Barton et al . 2014 ). Almost two thirds of the cobalt needed to meet this societal demand derives from mining activity in the Central African Copper Belt (CACB). There it exists primarily...

... to start this discussion is by looking at the global high- and low-growth periods during the 20 th century ( Fig. 1 ). Fig. 1. Growth rate of steel and copper. Four notes regarding Figure 1 are needed: The figure records average annual demand growth rates for the one mainstream alloy...

... Copper isotopes (δ 65 Cu) are a new geochemical tool for understanding seafloor hydrothermal systems and associated seafloor massive sulfide (SMS) deposits (e.g., Berkenbosch et al., 2015 ). Most Cu isotope measurements have been conducted on primary chalcopyrite (δ 65 Cu chalcopyrite ) and on enargite...