“…The study on the Touissit-Bou Beker and Jbel Bou Dahar (Morocco) supergene ores [6] is considered the feature article of this issue for its interesting content and well-argued conclusions. The Moroccan Atlas system's world-class Mississippi Valley-type districts have been investigated by integrating Pb-Zn ± Cu mineralogy, texture, and stable isotope (C, O, S) geochemistry.…”