RT Journal Article T1 Unveiling High-Tech Metals in Roasted Pyrite Wastes from the Iberian Pyrite Belt, SW Spain A1 Yesares Ortiz, María Dolores A1 González Jiménez, José María A1 Jiménez Cantizano, Francisco Abel A1 González Pérez, Igor A1 Caro Moreno, David A1 Sánchez, Isabel María AB The Iberian Pyrite Belt (IPB), in the southwestern Iberian Peninsula, is a large metallogenic province exploited since ancient times. As a result of historical and current mining activity, a vast volume of metallic mineral waste, mainly derived from the processing of pyrite, is still in situ and polluting the environment. A specific mine waste residuum locally known in the area as “morrongos”, which was produced during pyrite roasting mainly in the 19th century, is evaluated here in order to unravel untapped resources of high-tech metals commonly used in high-tech devices. Applying a combination of whole-rock geochemical (ICP-AES, ICPMS, FA-AAS) and single-grain mineralogical techniques (EPMA, LA-ICP-MS, FESEM, and FIB-HRTEM) on the “morrongos”, we unhide the still-present remarkable concentrations of Au, Ag, Pb, Zn, and Cu in them. The mineralogical expressions for these economic metals include oxides (hematite, magnetite, and hercynite), arsenates, sulfates of the jarosite group, native metals, and, to a lesser extent, relictic sulfides. This first-ever estimation of these economic metals in this type of residue allows their revalorization, highlighting them as suitable sources for the exploitation and recovery of metals necessary for the clean energy transition. PB MDPI YR 2023 FD 2023-08-07 LK https://hdl.handle.net/20.500.14352/87766 UL https://hdl.handle.net/20.500.14352/87766 LA eng NO Consejería de Economía, Conocimiento, Empresas y Universidad de la Junta de Andalucía DS Docta Complutense RD 6 abr 2025