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Fluidos asociados a la formación de epidota + (clorita + cuarzo) en las pegmatitas del plutón de La Cabrera (Sistema Central Español)

Lozano Fernández, Rafael Pablo and Bachiller Jareño, Nuria and Casquet, César (1997) Fluidos asociados a la formación de epidota + (clorita + cuarzo) en las pegmatitas del plutón de La Cabrera (Sistema Central Español). Geogaceta, 21 . pp. 155-158. ISSN 0213-683X

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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.

Item Type:Article
Uncontrolled Keywords:Pegmatites, Ca-alterations, Fluid inclusions, Spanish Central System.
Subjects:Sciences > Geology > Petrology
ID Code:11550
Deposited On:16 Nov 2010 11:38
Last Modified:16 Nov 2010 11:38

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