Results 31 to 40 of about 3,477 (195)
THE FATE OF SMECTITE IN KOH SOLUTIONS [PDF]
, 2006 International audienceThe aim of the present study was to investigate the detailed evolution of the SAz-1 smectite in 1 M KOH at 80°C at a solid/liquid ratio of 1/80. AFM observations indicated no change in crystal size or shape.
Bauer, A. +6 more
core +5 more sources
The effect of sonication on dioctahedral and trioctahedral micas
Ultrasonics Sonochemistry, 2006 This paper reports on the effect of sonication on two mica samples. The materials have been investigated in terms of structure modifications, particle size and morphology, specific surface area and thermogravimetric behaviour. The effect of the mica structure, namely density and distribution of cations over the octahedral sites, on the sonicated ...
J L, Pérez-Rodríguez +3 more
openaire +2 more sources
Colloids and Interfaces, 2019 Low-temperature nitrogen adsorption–desorption isotherms, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, as well as infrared spectroscopy were used to characterize structural features of raw and acid-treated ...
Halyna Sokol +4 more
doaj +1 more source
Journal of Economic Geology, 2021 Introduction The chemical composition of biotite in mineralization associated with granitoids and copper porphyry deposits is sensitive to several chemical and physical factors.
Ahmad Ahmadi Khalaji +4 more
doaj +1 more source
Diagenetic smectite-to-illite transition in clay-rich sediments: A reappraisal of X-ray diffraction results using the multi-specimen method [PDF]
, 2009 International audienceSmectite illitization is a common mineralogical reaction occurring during the burial diagenesis of clay-rich sediments and shales, and has thus attracted sustained interest over the last fifty years.
Claret, Francis +3 more
core +3 more sources
Discrete breathers for understanding reconstructive mineral processes at low temperatures [PDF]
, 2006 Reconstructive transformations in layered silicates need a high tem- perature in order to be observed. However, very recently, some systems have been found where transformation can be studied at temperatures 600 C below the lowest experimental results ...
Alba, M. D. +4 more
core +2 more sources
Zinc-rich clays in supergene non-sulfide zinc deposits [PDF]
, 2015 International audienceThe nature and the origin of zinc clays are poorly understood. With the example of the Bou Arhous Zn-Pb ore deposit in the Moroccan High Atlas, this study presents new data for the mineralogical and chemical characterization of ...
Barbanson, Luc +4 more
core +2 more sources
Evaluation of rare earth on layered silicates under subcritical conditions: Effect of the framework and interlayer space composition [PDF]
, 2013 Clay-based minerals are considered to be an important component in backfill barriers due to both their ability to seal and adsorb radioactive waste and to interact chemically with it under subcritical conditions. Herein, we describe a systematic study of
Alba Carranza, María Dolores +4 more
core +1 more source
Crystal structure and chemistry of lithium-bearing trioctahedral micas-3T
European Journal of Mineralogy, 2003 Chemical analyses and crystal structure refinements were performed on lithian siderophyllite-3 T crystals from granitic pegmatites of the anorogenic Pikes Peak batholith (Colorado) to characterize the crystal chemistry and relations with trioctahedral lithium-bearing micas showing different stacking sequences.
BRIGATTI, Maria Franca +2 more
openaire +1 more source
The origin and implications of clay minerals from Yellowknife Bay, Gale crater, Mars [PDF]
, 2015 The Mars Science Laboratory (MSL) rover Curiosity has documented a section of fluvio-lacustrine strata at Yellowknife Bay (YKB), an embayment on the floor of Gale crater, approximately 500 m east of the Bradbury landing site. X-ray diffraction (XRD) data
Bristow, Thomas F. +2 more
core +1 more source