Publication: Fluidos asociados a la formación de epidota + (clorita + cuarzo) en
las pegmatitas del plutón de La Cabrera (Sistema Central Español)
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Publication Date
1997
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Sociedad Geológica de España
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Abstract
Fluids related to the epidote+chlorite+quartz and calcite (+laumontite) 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 3000º b) A moderate to high salinity (15.3-24.5 wt% NaCl equiv.)
heterogeneous (liquid + 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.