RT Journal Article T1 Neoformación de fases minerales secundarias ricas en tierras raras en los granitos de la Sierra de Guadarrama: Bastnaesita-(CE) T1 Neoformation of REE secundary mineral phases in the granites from the Sierra de Guadarrama: Bastnaesite-(Ce) A1 Casillas Fernández, R. A1 Nagy, G. A1 Brändle, José Luis A1 Panto, G. A1 Forizs, I. AB The subsolidus postmagmatic alteration processes in the granites of the Sierra de Guadarrama produce the transformation and neoformation of the principal and accesory phases. One of these secondary minerals is the bastnaesite-(Ce) wich concentrates the rare earth originated by the allanite and monazite mineral destruction PB Sociedad Geológica de España YR 1993 FD 1993 LK http://hdl.handle.net/10272/14051 UL http://hdl.handle.net/10272/14051 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026