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 Instituto Andaluz de Ciencias de la Tierra y Departamento de Mineralogía y Petrología. CSIC-Universidad de Granada. Avda. Fuentenueva, s/n. 18002 Granada, España.
- 2 URA nº1366 du CNRS, ESEM, Université d'Orléans. 45072 Orléans Cedex 2, Francia.
ISSN: 0213-683X
Year of publication: 1996
Issue: 20
Pages: 1567-1570
Type: Article
More publications in: Geogaceta
Abstract
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).