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] ; César Casquet Martín
  1. [1] Universidad Complutense de Madrid

     Universidad Complutense de Madrid

     Madrid, España

     
• Localización: Geogaceta, ISSN 0213-683X, Nº. 21, 1996 (Ejemplar dedicado a: 21a Sesión Científica, Huelva 1996), págs. 155-158
• Idioma: español
• Títulos paralelos:
  • Fluids associated to epidote + (chlorite + quartz) in pegmatites from la Cabrera pluton (Spanish Central System)
• Enlaces
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• 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.