Génesis de las mineralizaciones de Ge asociadas a esfaleritas portadoras de fluidos "incompatibles" del Cerro del Toro (Alpujárride, SE de España).

• S. Morales-Ruano ^[1] ; J. C. Touray ^[2] ; L. Barbanson ^[2] ; P. Fenoll Hach-Alí ^[1]
  1. [1] Instituto Andaluz de Ciencias de la Tierra

     Instituto Andaluz de Ciencias de la Tierra

     Granada, España

     
  2. [2] URA nº1366 du CNRS, ESEM, Université d'Orléans. 45072 Orléans Cedex 2, Francia.
• Localización: Geogaceta, ISSN 0213-683X, Nº. 20, 7, 1996, págs. 1567-1570
• Idioma: español
• Títulos paralelos:
  • Genesis of Ge mineralisation related to sphalerite bearing "incompatible" fluids from Cerro del Toro (Alpujarride, SE of Spain).
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• Resumen

  • The problem addressed in this article is a tentative explanation of the coexistence of partially miscible "ncompatible" fluids in different primary inclusions of the same crystal (or group of crystals). lt is based on a study of sphalerite crystals from Cerro del Toro, containing two groups of primary inclusions with fillings displaying contrasting compositions, respectively suggestive on one hand of a "Mississippi Valley type"(MVT) brine, and on the other hand of a metamorphic fluid. The interpretation is based on a comparison of the composition of both "primary" fluids and a tentative explanation involving partial metamorphic recrystallization whose possible markers are solid inclusions of briartite (a Ge-rich mineral).