RT Journal Article T1 Comportamiento del nitrógeno en los procesos mineralizadores de los yacimientos de Sb de Mari Rosa y El Juncalón (Zona Centro Ibérica) T1 Nitrogen beha viour during ore-forming processes at Mari Rosa and El Juncalón Sb-deposits (Central Iberían zone) A1 Ortega, Lorena AB Fluid inclusions associated to Mari Rosa and El Juncalón antimony deposits show that N2 is a relevant component of the fluid phase. Besides, altered host rocks show significant enrichment in nitrogen rather than depletion. N2 in hydrothermal fluids mainly originates from the release to the fluid of ammonium from NHJj- bearing silicates at T>550-600°C (Hallam & Eugster, 7 976; Dubessy & Ramboz, 7 986). According to that, inner contact metamorphic aureoles around near-by granitic bodies were the probable sites for nitrogen hydrothermal lixiviation PB Sociedad Geológica de España YR 1994 FD 1994 LK http://hdl.handle.net/10272/13931 UL http://hdl.handle.net/10272/13931 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026