Geoquímica de feldespatos y moscovita de las Pegmatitas del Cap de Creus
- P. A. Abella 1
- F. Velasco 2
- l. Yusta 1
- J. C. Melgarejo i Draper 1
- 1 Departament de Cristal lografia, Mineralogia i Dipósits Minerals, Universitat de Barcelona
- 2 Departamento de Mineralogía y Petrología. Universidad del País Vasco
ISSN: 0213-683X
Año de publicación: 1996
Número: 20
Páginas: 700-702
Tipo: Artículo
Otras publicaciones en: Geogaceta
Resumen
The Cap de Creus (NE Spain) is the easternmost outcrop of the Hercynian basement of the Pyrenees. The peninsula is constituted by materials affected by the hercynian metamorphism. A pegmatitic field occurs within the metamorphic rocks in the northern part of the Cap de Creus peninsula. Four pegmatite types have been established according to internal structure and mineralogica/ criteria: microcline-rich (type I); beryl-columbite (type //); beryl-columbite phosphate (type 111) and albite (type IV). The composition of moscovite and feldspars have been studied. The K/Rb ratio decreases progressively from type I to type IV, and a/so there is a progressive enrichment in P, Cs, and Y, according to the degree of pegmatite evolution.