Fluidos asociados a la formación de epidota + (clorita + cuarzo) en las pegmatitas del plutón de La Cabrera (Sistema Central Español)
- Lozano, R.P. 1
- Bachiller, R.P. 1
- Casquet Martín, César
- 1 Universidad Complutense de Madrid, España
ISSN: 0213-683X
Año de publicación: 1996
Título del ejemplar: 21a Sesión Científica, Huelva 1996
Número: 21
Páginas: 155-158
Tipo: Artículo
Otras publicaciones en: Geogaceta
Resumen
Fluids related to the epidote+chlorite+quartz and calcite (+Iaumontite) alterations present in the cores of pegmatites from La Cabrera pluton have been determined. Two types of fluids are in volved: a) A low salinity (0.4-4.5 wt% NaCl equiv.) NaCl-H20 fluid is the responsable for the first type of alteration. Temperature was probably close to 300ºC. b) A moderate to high salinity (15.3-24.5 wt% NaCl equiv.) heterogeneous (Iiquid + gas) CaCI2-NaCI-H20 fluid was in volved in the second alteration under conditions of Pfluid probably very close to hydrostatic. These alterations probably took place as discrete hydrothermal events of different ages.