Minerales opacos en las intrusiones alcalinas de Tamargada, La Gomera (Islas Canarias)
- J.A. Rodríguez 1
- Julio de la Nuez Pestana
- Jesús Martínez Frías
- 1 Universidad de La Laguna (Departamento de Geología)
ISSN: 0210-6558
Datum der Publikation: 1988
Ausgabe: 11
Nummer: 2
Seiten: 30-31
Art: Artikel
Andere Publikationen in: Boletín de la Sociedad Española de Mineralogía
Zusammenfassung
Pyrite-pyrrhotite and magnetite-i1menite associations in Tamargada's alkaline rocks are studied and used as geothermometric indicators. The former pair suggests a stability about 650- 700° C for primary idiomorphic types and less than 500°C for secundary allotriomorphic ones. Magnetite-ilmenite pairs, point out an interval about 700-790°C that Mould come up to the magmatic crystallization temperature.