Identificación de fases cuarzo-opalinas en vermiculita

• Autores: A. Ruiz, P.J. Sánchez
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 1, 4, 2000 (Ejemplar dedicado a: V Congreso Geológico de España (Alicante, 10-14 julio 2000)), págs. 67-70
• Idioma: español
• Enlaces
  • Texto Completo Ejemplar
• Resumen

  • In the present work is studied the presence of silica intercalations between aggregates flakes in the deposit of Santa Olalla vermiculite (Huelva). The studies demonstrate that such silica intercalations have nodular morphology, formed mainly by chalcedony and opal-CT, as well as various opalines structures in the form of ramifications constituted by opal-CT. It is concluded that the silica phases are subsequent to the vermiculite formation. The presence silica phases supports the hypothesis of the hydrothermal origin of the vermiculite.