RT Journal Article T1 Vertidos de escorias en el Rio Oka (Reserva Natural de la Biosfera de Urdaíbaí, Vizcaya): Aspectos mineralógicos y geoquímicos T1 Slag dumpings in the Oka River (Urdaibai National Biosphere Reserve, Vizcaya): mineralógica! and geochemical characteristics A1 Irabien, María Jesús AB As a part of a wider effort to provide a view of the environmental conditions of some basque rivers, mineralogy and heavy metal geochemistry of foundry slags dumped in the Oka river (Vizcaya) and sediments were studied. Slags are composed of iron-enriched minerals (fayalite, wüstite, hematite and goethite), while quartz, calcite and phyllosilicates are the main component of sediments. Geochemical results confirm the low capacity of thesé slags as a significant source of heavy metals to the environment PB Sociedad Geológica de España YR 1998 FD 1998 LK http://hdl.handle.net/10272/10208 UL http://hdl.handle.net/10272/10208 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026