Clays and Clay Minerals

Clays and Clay Minerals 14 records found  Search took 0.00 seconds. 
1.
17 p, 815.3 KB Diffusion of Na and Cs in montmorillonite / Kosakowski, Georg (Paul Scherrer Institut) ; Churakov, Sergey V. (Paul Scherrer Institut) ; Thoenen, Tres (Paul Scherrer Institut)
The state and dynamics of water and cations in pure and mixed Na-Cs-montmorillonite as a function of the interlayer water content were investigated in the present study, using Monte Carlo and classical, molecular-dynamics methods. [...]
2008 - 10.1346/CCMN.2008.0560205
Clays and Clay Minerals, Vol. 56, Núm. 2 (2008) , p. 190-206  
2.
20 p, 2.2 MB Mineralogy and geochemistry of the host-rock alterations associated with the Shea Creek unconformity-type uranium deposits (Athabasca Basin, Saskatchewan, Canada). Part 1. Spatial variation of illite properties / Laverret, Emmanuel (University of Poitiers) ; Patrier Mas, Patricia (University of Poitiers) ; Beaufort, Daniel (University of Poitiers) ; Kister, Philippe (Centre national de la recherche scientifique) ; Quirt, David (Saskatchewan Research Council) ; Bruneton, Patrice (Business Unit Mines) ; Clauer, Norbert (Centre de Géochimie de la Surface)
Unconformity-related uranium deposits, which represent a significant high-grade uranium resource, are systematically surrounded by a host-rock alteration halo enriched in clay minerals. Illite is often the major clay mineral component of the halo and it displays a variable crystal structure. [...]
2006 - 10.1346/CCMN.2006.0540301
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 275-294  
3.
19 p, 2.0 MB Mineralogical and geochemical characteristics and genesis of the sepiolite deposits at Polatli Basin (Ankara, Turkey) / Karakaya, Muazzez C. (Selçuk Üniversitesi Müh-Mim) ; Karakaya, Necati (Selçuk Üniversitesi Müh-Mim) ; Temel, Abidin (Hacettepe Üniversitesi Müh)
The Middle-Upper MiocenePliocene sediments near Polatli{dotless} contain commercial sepiolitic clay deposits. The sepiolite-rich Polatli{dotless} basin sediments were studied to describe the sepiolitic clay deposits of the area and to assess the environments of formation using X-ray diffraction, optical and scanning electron microscopy, and chemical analysis. [...]
2011 - 10.1346/CCMN.2011.0590306
Clays and Clay Minerals, Vol. 59, Núm. 3 (2011) , p. 286-314  
4.
19 p, 2.0 MB Mineralogy and geochemistry of the host-rock alterations associated with the Shea Creek unconformity-type uranium deposits (Athabasca Basin, Saskatchewan, Canada). Part 2. Regional-scale spatial distribution of the Athabasca Group sandstone matrix minerals / Kister, Philippe (Centre national de la recherche scientifique) ; Laverret, Emmanuel (Université de Poitiers) ; Quirt, David (Saskatchewan Research Council) ; Cuney, Michel (Centre national de la recherche scientifique) ; Patrier Mas, Patricia (Université de Poitiers) ; Beaufort, Daniel (Université de Poitiers) ; Bruneton, Patrice (Business Unit Mines)
The spatial distribution of the dominant matrix minerals present in the middle-Proterozoic Athabasca Group sandstone (kaolin, illite, sudoite, dravite, hematite) was studied at a regional scale in the Shea Creek region (Saskatchewan, Canada), in which two epigenetic unconformity-type uranium deposits have been discovered. [...]
2006 - 10.1346/CCMN.2006.0540302
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 295-313  
5.
19 p, 3.0 MB The occurrence and origin of the söǧüt kaolinite deposits in the paleozoic saricakaya granite-granodiorite complexes and overlying neogene sediments (Bilecik, Northwestern Turkey) / Kadir, Selahattín (Eskişehir Osmangazi University. Department of Geological Engineering) ; Kart, Fírdevs (Eskişehir Osmangazi University. Department of Geological Engineering)
The Soǧut kaolinite deposits at Çalti{dotless}, İnhisar, and Küre, Turkey, are an important source of raw materials for the ceramics industry of that country, but no detailed mineralogical or geochemical characterizations of these economically important materials have been carried out to date. [...]
2009 - 10.1346/CCMN.2009.0570304
Clays and Clay Minerals, Vol. 57, Núm. 3 (2009) , p. 311-329  
6.
10 p, 516.6 KB Comparison of K-Ar ages of diagenetic illite-smectite to the age of a chemical remanent magnetization (CRM) : An example from the Isle of Skye, Scotland / Elliott, W.Crawford (Georgia State University. Department of Geology) ; Basu, Ankan (Virginia Polytechnic Institute and State University. Department of Geosciences) ; Wampler, J. Marion (Georgia Institute of Technology. School of Earth and Atmospheric Sciences) ; Elmore, R. Douglas (Oklahoma University. School of Geology and Geophysics) ; Grathoff, Georg H. (Portland State University. Department of Geology)
The clay fractions of Jurassic marls in the Great Estuarine Group in southern Isle of Skye are composed of mixed-layered illite-smectite (I-S) with large percentages (>85%) of illite layers, kaolinite, and generally smaller amounts of chlorite. [...]
2006 - 10.1346/CCMN.2006.0540303
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 314-323  
7.
9 p, 2.0 MB Fault-hosted palygorskite from the Serrata de Níjar deformation zone (SE Spain) / García-Romero, E. (Universidad Complutense. Departamento de Cristalografía y Mineralogía) ; Suárez, M. (Universidad de Salamanca. Departamento de Geología) ; Oyarzun, R. (Universidad Complutense. Departamento de Cristalografía y Mineralogía) ; López-García, J.A. (Universidad Complutense. Departamento de Cristalografía y Mineralogía) ; Regueiro, M. (Instituto Geológico y Minero de España)
Palygorskite fibers growing along fault planes in the outcrops of a large fault zone in SE Spain (Carboneras Fault Zone: CFZ; Serrata de Nijar) were studied by X-ray diffraction, scanning electron microscopy-energy dispersive X-ray analysis, and transmission electron microscopy-analytical electron microscopy. [...]
2006 - 10.1346/CCMN.2006.0540304
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 324-332  
8.
18 p, 3.4 MB Mineralogy and geochemistry of Paleocene ultramafic- and sedimentary-hosted talc deposits in the southern part of the Sivas Basin, Turkey / Yalçin, Huêseyin (Cumhuriyet University. Department of Geological Engineering) ; Bozkaya, Ömer (Cumhuriyet University. Department of Geological Engineering)
Talc deposits, located mainly in three areas of north-central Turkey, are present in the ophiolitic series of the Cretaceous and in siliciclastic rocks of the Paleocene. Talc deposits related to ophiolites are between tectonite and cumulate occuring as beds and/or lenses and 0. [...]
2006 - 10.1346/CCMN.2006.0540305
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 333-350  
9.
12 p, 2.3 MB Clay minerals in early amphibole weathering : Tri- to dioctahedral sequence as a function of crystallization sites in the amphibole / Proust, D. (UMR 6532 Faculté des Sciences. CNRS. HydrASA) ; Caillaud, J. (Université du Littoral Côte d'Opale. UMR 8013 CNRS. ELICO) ; Fontaine, C. (Faculté des Sciences. UMR 6532 CNRS. HydrASA)
The early stages of amphibole weathering result in the crystallization of several clay mineral species: tri- and dioctahedral smectites, interstratified dioctahedral kaolinite-smectite (K-S), and halloysite. [...]
2006 - 10.1346/CCMN.2006.0540306
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 351-362  
10.
12 p, 462.6 KB Tracer diffusion in compacted, water-saturated bentonite / Bourg, Ian C. (ANDRA) ; Sposito, Garrison (Lawrence Berkeley National Laboratory. Geochemistry Department) ; Bourg, Alain C.M. (Université de Pau et des Pays de l'Adour. Department of Environmental HydroGeochemistry (LHGE-JE2397))
Compacted Na-bentonite clay barriers, widely used in the isolation of solid-waste landfills and other contaminated sites, have been proposed for a similar use in the disposal of high-level radioactive waste. [...]
2006 - 10.1346/CCMN.2006.0540307
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 363-374  
11.
7 p, 392.8 KB The effect of heating on the surface area, porosity and surface acidity of a bentonite / Noyan, Hülya (Ankara University. Department of Chemistry. Faculty of Science) ; Önal, Müserref (Ankara University. Department of Chemistry. Faculty of Science) ; Sarikaya, Yüksel (Ankara University. Department of Chemistry. Faculty of Science)
The Hançili bentonite from Turkey shows significant changes in surface area, micro- and mesoporosity, surface acidity and acid strength with heating from 100 to 900°C for 2 h. The specific surface area (S) and specific micro-mesopore volume (V) of the original and heated samples were evaluated from N adsorption and desorption data, respectively, by standard methods. [...]
2006 - 10.1346/CCMN.2006.0540308
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 375-381  
12.
8 p, 1.5 MB Preparation of large platy particles of Co-Al layered double hydroxides / Kayano, Mihoko (Waseda University. Graduate School of Science and Engineering) ; Ogawa, Makoto Waseda University. (Department of Earth Sciences)
Cobalt (II) and Al (III) layered double hydroxides were precipitated from homogeneous solutions using urea hydrolysis under hydrothermal conditions. The particle sizes were controlled successfully by changing the reaction temperature and period. [...]
2006 - 10.1346/CCMN.2006.0540309
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 382-389  
13.
12 p, 1.0 MB X-ray diffraction line broadening on vibrating dry-milled two crows sepiolite / Bastida, Joaquin (Universidad de Valencia. Departamento de Geología) ; Kojdecki, Marek A. (Wojskowa Akademia Techniczna. Instytut Matematyki i Kryptologii) ; Pardo, Pablo (Universidad de Valencia. Departamento de Geología) ; Amorós, Pedro (Universidad de Valencia. Instituto de Ciencia de Materiales)
A reference sample of sepiolite and products of its comminution by vibrating dry-milling have been studied using X-ray diffraction (XRD) line-broadening analysis, complementary field emission scanning electron microscopy (FESEM) images and surface area measurements. [...]
2006 - 10.1346/CCMN.2006.0540310
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 390-401  
14.
6 p, 488.5 KB Mechanism of adsorption of water vapor by muscovite : A model based on adsorption calorimetry / Rakhmatkariev, Gairat (Academy of Sciences of Uzbekistan. Institute of General and Inorganic Chemistry)
Adsorption isotherms and differential heats of adsorption of water vapor by muscovite were measured at 303 K. The heats of adsorption are stepwise and each step corresponds to the stoichiometric formation of adsorption complexes of HO molecules with K ions, (HO)/K, (n = 1-6), which are located on the basal and lateral (edge) faces. [...]
2006 - 10.1346/CCMN.2006.0540311
Clays and Clay Minerals, Vol. 54, Núm. 3 (2006) , p. 402-407  

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