Presencia de zeolitas en las tobas sálicas del sur de la isla de Tenerife
- José D. García Hernández 1
- Jesús Santiago Notario del Pino
- María M. González Martín 1
- 1 Universidad de La Laguna (Departamento de Edafología y Geología)
ISSN: 0210-6558
Year of publication: 1990
Volume: 13
Issue: 0
Pages: 149-154
Type: Article
More publications in: Boletín de la Sociedad Española de Mineralogía
Abstract
Chemical and mineralogical composition of a group of pumitic tuffs from Tenerife (Canary Islands) in association with the recent volcanic episodes, mainly salic and alkaline, have been studied. Chemical composition of all let them to be classificated as phonolitic materials, with a high content in silica and alkalis and low quantity of Fe. Mineralogical composition was determinated by X-Ray Difraction, Scanning Electron Microscopy and Optical Microscopy, showing a generalized presence of zeolites, mainly phillipsite and also chabazite, erionite, analcime and clinoptinolite, many of them microcrystalline, genetically associated with the hydrotermal alteration of parental glass. The beds expanse and the mineralogical species variety make possible their industrial exploitation with very low cost, within the wide grade of applications of natural zeolites.