165 AUTORES Cobalt is critical for the green energy transition, yet the mineralogical distribution and the mechanisms of concentration of Co in different types of hydrothermal ore deposits remain poorly constrained. Here we document ore mineral assemblages from the active Fåvne and Loki’s Castle seafloor massive sulfide deposits located along the Mohns Ridge in the Norwegian Sea, and determine their whole-rock and mineral chemical compositions with a special emphasis on Co. Fredrik SAHLSTRÖM Yanbo CHENG Sabina Strmić PALINKAŠ Siv Hjorth DUNDAS Eszter SENDULA Marie WOLD Rolf B. PEDERSEN Geological Engineering Program, Pontificia Universidad Católica del Perú Geoscience Australia. Department of Geosciences, UiT The Arctic University of Norway Centre for Deep Sea Research, Department of Earth Science, University of Bergen ABSTRACT
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