RT Journal Article T1 Estudio por microscopía electrónica de transmisión de saponita activada. A1 Suárez Barrios, Mercedes A1 García Romero, Emilia A1 Santiago Buey, Cristina de A1 Martín Pozas, José M. AB This work studies the modifications undergone by the Creen Clays Saponite in the Tagus Basin subjected toactivation treatments, and stresses the influence of the development of the electronic microscopy technique forstudying these materials. Acid treatment with HU and pillaring treatment with Al13 were performed.Characterization of the samples was carried out by DRX, chemical analysis of majar elements and TransmissionElectronic Microscopy. Acid treament causes the delaminarion and fragmentation of the particles, partiallydissolving the octahedral layer and generating amorphous silica, coming from the tetrahedral layer. Pillaringtreatment gives rise to a stable salid with interlayer spadng at 18A. The high number of crystalline defectspresent in the saponite conditions the formation of a low number of pillars per cell. PB Sociedad Geológica de España SN 0213-683X YR 1999 FD 1999 LK https://hdl.handle.net/20.500.14352/57104 UL https://hdl.handle.net/20.500.14352/57104 LA spa DS Docta Complutense RD 3 may 2024