Boiling-induced extreme Cu isotope fractionation in sulfide minerals forming by active hydrothermal diffusers at the Aegean Kolumbo volcano: Evidence from in situ isotope analysis. - Zegkinoglou, Nikolaos N.; Mathur, Ryan; Kilias, Stephanos P.; Godfrey, Linda; Pletsas, Vasilios; Nomikou, Paraskevi; Zaronikola, Nina (Geology, 2023)