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Chalcopyrite-dissolved Cu isotope exchange at hydrothermal conditions: Experimental constraints at 350 °C and 50 MPa by Drew D. Syverson; David M. Borrok; Spencer Niebuhr; William E. Seyfried is a Earth and Planetary Sciences article available to read on EtoBox.
What is Chalcopyrite-dissolved Cu isotope exchange at hydrothermal conditions: Experimental constraints at 350 °C and 50 MPa about?
This study presents experimental copper isotope (65Cu/63Cu) fractionation data between chalcopyrite and dissolved Cu at physiochemical conditions representative of high temperature mid-ocean ridge hydrothermal environments. The experimental data are compared with chemical and Cu isotope data from high temperature fluids and chalcopyrite sampled from the Main Endeavour Field and ASHES hydrothermal fields located along the Juan de Fuca Ridge. Specifically, three long-term (>250–2500 hr) chalcopyrite recrystallization experiments were conducted at 350 °C and 50 MPa in acidic chloride-bearing fluid. One of the experiments contained 57Fe isotope tracer to quantify reaction progress and the extent of exchange between chalcopyrite and dissolved Fe, which serves as a proxy for Cu isotope exchange (Syverson et al., 2017). The dissolved 57Fe tracer demonstrated rapid isotope exchange between chalcopyrite and dissolved metals within the duration of the long term experiments, approximately 2500 hr, where complete exchange was achieved within approximately 1000 hr. The experimentally determined δ65Cu equilibrium fractionation between chalcopyrite and dissolved Cu, Δ 65 C u [ C p y - C u a q ] =
Who reads Chalcopyrite-dissolved Cu isotope exchange at hydrothermal conditions: Experimental constraints at 350 °C and 50 MPa?
It is typically read by researchers, students, and practitioners in Earth and Planetary Sciences.
- Author
- Drew D. Syverson; David M. Borrok; Spencer Niebuhr; William E. Seyfried
- Publisher
- Elsevier BV
- Published
- 2021
- Language
- EN
- Field
- Earth and Planetary Sciences (Physical Sciences)