Clays and Clay Minerals

Clays and Clay Minerals 9 records found  Search took 0.00 seconds. 
1.
17 p, 1.2 MB Ultrafine clay minerals of the pleistocene olorgesailie formation, Southern Kenya rift : Diagenesis and paleoenvironments of early hominins / Deocampo, Daniel M. (Georgia State University. Department of Geosciences) ; Behrensmeyer, Anna K. (Smithsonian Institution. National Museum of Natural History. Department of Paleobiology) ; Potts, Richard (National Museums of Kenya. Department of Earth Science. Paleontology Section)
The Pleistocene Olorgesailie Formation in the southern Kenya Rift has yielded a remarkable assemblage of Acheulean artifacts and vertebrate fossils, including hominin specimen KNM-OG 45500. Members 1 and 7 both contain clay-rich deposits that have been pedogenically modified into paleosols (UM1p and UM7p, respectively). [...]
2010 - 10.1346/CCMN.2010.0580301
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 294-310  
2.
7 p, 639.0 KB Rheological properties of acid-activated bentonite dispersions / Liang, Hu-Nan (Nanjing Forestry University. Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology) ; Long, Zhu (Jiangnan University. Ministry of Education. Key Laboratory of Eco-Textiles) ; Zhang, Hui (Nanjing Forestry University. Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology) ; Yang, Shu-Hui (Jiangnan University. Ministry of Education. Key Laboratory of Eco-Textiles)
Acid-activated bentonites are utilized in many applications, including those that depend on their rheological properties and behavior, but little information is available regarding the rheological characteristics of this important industrial material. [...]
2010 - 10.1346/CCMN.2010.0580302
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 311-317  
3.
9 p, 786.2 KB Newmod+, a new version of the newmod program for interpretingx-ray powder diffraction patterns from interstratified clay minerals / Yuan, Hongji (Indiana University. Department of Geological Sciences) ; Bish, David L. (Indiana University. Department of Geological Sciences)
NEWMOD was developed by R. C. Reynolds, Jr. , for the study of two-component interstratifications of clay minerals. One-dimensional X-ray diffraction (XRD) profiles of an interstratified system of two clay minerals can be simulated using NEWMOD, given a set of parameters that describes instrumental factors, the chemical composition of the system (e. [...]
2010 - 10.1346/CCMN.2010.0580303
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 318-326  
4.
13 p, 1.1 MB Use of natural and modified magadiite as adsorbents to remove th(IV), u(VI), and eu(III) from aqueous media - thermodynamic and equilibrium study / Guerra, Denis L. (Universidade Federal de Mato Grosso. UFMT. Centro de Recursos Minerais) ; Ferrreira, Josane . (Universidade Federal de Mato Grosso. UFMT. Centro de Recursos Minerais) ; Pereira, Mário J. (Universidade Federal de Mato Grosso. UFMT. Centro de Recursos Minerais) ; Viana, Rúbia R. (Universidade Federal de Mato Grosso. UFMT. Centro de Recursos Minerais) ; Airoldi, Claudio (State University of Campinas. Chemistry Institute)
The contamination of aquatic environments by toxic metals such as radionuclides is of great concern because of the tendency of those metals to accumulate in the vital organs of humans and animals, causing severe health problems. [...]
2010 - 10.1346/CCMN.2010.0580304
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 327-339  
5.
11 p, 1.5 MB New template effect in hydrotalcite synthesis. nodular VS. layered morphologies / Sommer, Alicia E. (Universidad Autónoma de Puebla. Facultad de Ciencias Químicas) ; Fetter, Geolar (Universidad Autónoma de Puebla. Facultad de Ciencias Químicas) ; Bosch, Pedro (Universidad Nacional Autónoma de Mexico. Instituto de Investigaciones en Materiales) ; Lara, Victor H. (Universidad Autónoma Metropolitana - Iztapalapa. Departamento de Química)
The morphology of hydrotalcites determines their use in catalysis, biomedicine, or adsorption as they may work as anion exchangers or as drug deliverers. In catalysis, reagents need access to as much surface area as possible; in biomedicine, drugs have to be encapsulated. [...]
2010 - 10.1346/CCMN.2010.0580305
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 340-350  
6.
13 p, 734.2 KB Diffusion of calcium chloride in a modified bentonite : Impact on osmotic efficiency and hydraulic conductivity / Mazzieri, Francesco (Università Politecnica delle Marche. Department of FIMET) ; di Emidio, Gemmina (Ghent University. Technologie Park. Laboratory of Geotechnics) ; van Impe, Peter O. (Ghent University. Technologie Park. Laboratory of Geotechnics)
Chemically modified bentonites are being developed with the aim of preserving low hydraulic conductivity in the presence of potentially aggressive permeants in pollutant-containment applications. "Multiswellable" bentonite (MSB) has been obtained by treating standard sodium bentonite with propylene carbonate. [...]
2010 - 10.1346/CCMN.2010.0580306
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 351-363  
7.
11 p, 1.1 MB Precipitation and transformation of secondary fe oxyhydroxides in a histosol impacted by runoff from a lead smelter / Gao, Xiaodong (University of Arizona. Department of Soil) ; Schulze, Darrell G. (Purdue University. Department of Agronomy)
Secondary Fe (III) oxyhydroxides play a key role in controlling the mobility and bioavailability of trace metals in acidic, sulfate-rich soils, such as mining and smelter sites. Schwertmannite, jarosite, goethite, and ferrihydrite are the most common mineral phases identified in such soils. [...]
2010 - 10.1346/CCMN.2010.0580308
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 377-387  
8.
11 p, 1.2 MB Illitization of early paleozoic k-bentonites in the baltic basin : Decoupling of burial- and fluid-driven processes / Somelar, Peeter (University of Tartu. Department of Geology) ; Kirsimäe, Kalle (University of Tartu. Department of Geology) ; Hints, Rutt (Estonian Museum of Natural History) ; Kirs, Juho (University of Tartu. Department of Geology)
The mineralogical characteristics of Ordovician and Silurian K-bentonites in the Baltic Basin were investigated in order to understand better the diagenetic development of these sediments and to link illitization with the tectonothermal evolution of the Basin. [...]
2010 - 10.1346/CCMN.2010.0580309
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 388-398  
9.
16 p, 1.6 MB Dissolution of Cr, Zn, Cd, and Pb single- and multi-metal-substituted goethite : Relationship to structural, morphological, and dehydroxylation properties / Kaur, Navdeep (The University of Sydney. Food and Natural Resources) ; Singh, Balwant (The University of Sydney. Food and Natural Resources) ; Kennedy, Brendan J. (The University of Sydney. School of Chemistry)
The morphology, dehydroxylation, and dissolution properties of single- and multi-metal (Cr, Zn, Cd, and Pb)-substituted goethites prepared using hydrothermal methods are reported. The crystal morphology varied with the nature and the number of metals present in the system. [...]
2010 - 10.1346/CCMN.2010.0580311
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 415-430  

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