Clay Minerals

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Palaeoclimate, palaeosalinity and redox conditions control palygorskite claystone formation: an example from the Yangtaiwatan Basin, northwest China
Clay Minerals - Tập 56 Số 3 - Trang 210-221 - 2021
Lihui Liu, Shuai Zhang, Qinfu Liu, Linsong Liu, Youjun Deng
AbstractPalygorskite-bearing claystones and mudstones were deposited in a salt lake in the middle and lower parts of the Neogene Baiyanghe Formation in the Yangtaiwatan Basin, China. The petrological, mineralogical and geochemical characteristics of the sediments were investigated to determine the factors controlling palygorskite formation. The palygorskite claysto...... hiện toàn bộ
The Oxides and Hydroxides of Iron and Their Structural Inter-Relationships
Clay Minerals - Tập 4 Số 21 - Trang 15-30 - 1959
J. D. Bernal
Spectroscopic Study of the Adsorption of Rhodamine 6G on Laponite B for Low Loadings
Clay Minerals - Tập 29 Số 1 - Trang 105-113 - 1994
María J. Tapia, F. López Arbeloa, Teresa Arbeloa, Íñigo López‐Arbeloa, Robert A. Schoonheydt
AbstractThe adsorption of Rhodamine 6G in aqueous suspension on Laponite B was investigated by electronic absorption and emission spectroscopies. Fluorescence spectra suggest that the monomer is adsorbed at two different surfaces, the external and the internal. A monomer is intercalated in the interlamellar space at low loading of dye (<3% CEC), whereas the mono...... hiện toàn bộ
Hydration and dehydration characteristics of synthetic water-swelling fluoromicas: comparisons between silicates and germanates
Clay Minerals - Tập 13 Số 2 - Trang 167-175 - 1978
Kouki Kitajima, Nobutoshi Daimon, Ryuji Kondo
AbstractSolid solutions of fluoromicas WMg2Li(Si4−x GexO10)F2 (W = K, Na, Li. 0 ≦ x ≦ 4), which were closely related to taeniolite, were synthesized and the effect of the isomorphic...... hiện toàn bộ
Spectroscopic study of the adsorption of rhodamine 6G on clay minerals in aqueous suspensions
Clay Minerals - Tập 32 Số 1 - Trang 97-106 - 1997
F. López Arbeloa, María J. Tapia, Teresa Arbeloa, Íñigo López‐Arbeloa
AbstractAbsorption and fluorescence spectroscopies were applied to study the adsorption of rhodamine 6G on several smectite-type clays in aqueous suspension. The dye can be adsorbed as the monomeric and the dimeric forms on both the external and the interlamellar surfaces of the clay. The presence of these species and their evolution with the stirring time of the s...... hiện toàn bộ
Some Experiments on the Low-Temperature Removal of Carbonaceous Material from Clays
Clay Minerals - Tập 5 Số 28 - Trang 155-158 - 1962
P. S. Keeling
Rare earth elements in different size fractions of a marine quick clay from Ullensaker, and a till from Upper Numedal, Norway
Clay Minerals - Tập 14 Số 3 - Trang 229-240 - 1979
E. Roaldset
AbstractThe distribution of rare earth elements (REE) in two different sediments, a marine clay and a till, was found to be dependent both on grain size and mineralogical composition. In the marine clay the REE content was highest in the coarsest fraction; in the till REE were markedly enriched in the finest fraction. Detrital and authigenic origins for different s...... hiện toàn bộ
Accurate quantitative analysis of clay and other minerals in sandstones by XRD: comparison of a Rietveld and a reference intensity ratio (RIR) method and the importance of sample preparation
Clay Minerals - Tập 35 Số 1 - Trang 291-302 - 2000
Stephen Hillier
AbstractX-ray diffraction is used widely for quantitative analysis of geological samples but studies which document the accuracy of the methods employed are not numerous. Synthetic sandstones of known composition are used to compare a ‘routine application’ of a Rietveld and a reference intensity ratio (RIR) method of quantitative phase analysis. Both methods give s...... hiện toàn bộ
The occurrence of palygorskite in Quaternary sediments of the coastal plain of north-west Egypt
Clay Minerals - Tập 15 Số 1 - Trang 77-83 - 1980
H. Hassouba, H. F. Shaw
AbstractSediments from a Quaternary beach ridge complex along the coastal plain of north-west Egypt have been examined by X-ray diffraction and optical and scanning electron microscopy. Palygorskite was identified in the caliche capping the beach ridges and in the gypsiferous marls between the ridges; petrographic evidence indicated that this had formed authigenica...... hiện toàn bộ
Source of Palygorskite in Gypsiferous Aridisols and Associated Sediments from Central Iran
Clay Minerals - Tập 33 Số 4 - Trang 561-578 - 1998
Hossein Khademi
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