Trace elements distribution in colloform chalcopyrite and tennantite: insights from Butte (USA) and Lisheen (Ireland) - Alexandre Cugerone; Denis Fougerouse; Max Frenzel; Kalin Kouzmanov; William D.A. Rickard; Kai Luo; Vincent Motto-Ros; Valby van Schijndel; Lorenzo Tavazzani; David W. Saxey; Steven M. Reddy (Geochimica et Cosmochimica Acta, 2026)