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Clays and Clay Minerals

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Clays and Clay Minerals Encontrados 13 registros  La búsqueda tardó 0.01 segundos. 
1.
16 p, 3.7 MB Stress-induced alteration of sudoite : Structural and chemical modifications / Cruz, María Dolores R. (Facultad de Ciencias. Campus de Teatinos. Málaga) ; Ruiz, María Dolores R. (Facultad de Ciencias. Campus de Teatinos. Málaga) ; de Galdeano, Carlos Sanz (Instituto Andaluz de Ciencias de la Tierra)
The purpose of this study was to investigate the structural and chemical modifications of phyllosilicates that occur under natural conditions, using the progressive deformation of chlorite (sudoite) present in quartz-rich veins from the Internal Zone of the Rif range (Morocco) as the model system. [...]
2010 - 10.1346/CCMN.2010.0580102
Clays and Clay Minerals, Vol. 58, Núm. 1 (2010) , p. 21-36  
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2.
6 p, 331.7 KB The pH of aqueous bentonite suspensions / Kaufhold, Stephan (BGR Bundesanstalt für Geowissenschaften und Rohstoffe) ; Dohrmann, Reiner (LBEG Landesamt für Bergbau Energie und Geologie) ; Koch, Dietrich (S and B Industrial Minerals) ; Houben, Georg (BGR Bundesanstalt für Geowissenschaften und Rohstoffe)
The pH of aqueous bentonite suspensions is known to be influenced by carbonates present even in minor amounts. On the other hand, at high solid:liquid ratios (at standard pH measurement conditions: 2% w/w suspension), the type of exchangeable cation in the smectite is also known to determine pH (particularly Na or Ca). [...]
2008 - 10.1346/CCMN.2008.0560304
Clays and Clay Minerals, Vol. 56, Núm. 3 (2008) , p. 338-343  
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3.
8 p, 749.9 KB Relationship between Pb2+ adsorption and average Mn oxidation state in synthetic birnessites / Zhao, Wei (Huazhong Agricultural University. Key Lab of Subtropical Agriculture Resource and Environment) ; Cui, Haojie (Huazhong Agricultural University. Key Lab of Subtropical Agriculture Resource and Environment) ; Liu, Fan (Huazhong Agricultural University. Key Lab of Subtropical Agriculture Resource and Environment) ; Tan, Wenfeng (Huazhong Agricultural University. Key Lab of Subtropical Agriculture Resource and Environment) ; Feng, Xionghan (Huazhong Agricultural University. Key Lab of Subtropical Agriculture Resource and Environment)
The relationship between vacant Mn structural sites in birnessites and heavy-metal adsorption is a current and important research topic. In this study, two series of birnessites with different average oxidation states (AOS) of Mn were synthesized. [...]
2009 - 10.1346/CCMN.2009.0570501
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 513-520  
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4.
10 p, 1.2 MB Origin and mineralogy of sepiolite and palygorskite from the tuluanshan formation, eastern taiwan / Wang, Ming Kuang (National Taiwan University. Department of Agricultural Chemistry) ; Tseng, Pao Chung (National Cheng-Kung University. Department of Resources Engineering) ; Chang, Shyun Sheng (National Cheng-Kung University. Department of Resources Engineering) ; Ray, Dah Tong (National Cheng-Kung University. Department of Resources Engineering) ; Shau, Yen Hong (National Sun Yat-Sen University. Department of Marine Biotechnology and Resources) ; Shen, Yun Wey (National Cheng-Kung University. Department of Resources Engineering) ; Chen, Ruey Chyong (Chinese Petroleum Corporation. Exploration and Development Research Center) ; Chiang, Po Neng (National Taiwan University. Department of Agricultural Chemistry)
The Tuluanshan Formation of the eastern Coastal Range of Taiwan overlies an andesitic core complex presumed to be the source of hydrothermal fluids responsible for the Si- and Mg-rich mineralization of sepiolite and palygorskite (attapulgite) which are found in veins within fissures and in fracture zones of the volcanic rocks of the region. [...]
2009 - 10.1346/CCMN.2009.0570502
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 521-530  
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5.
24 p, 2.2 MB Partial dissolution of glauconitic samples : Implications for the methodology of K-Ar and Rb-Sr dating / Derkowski, Arkadiusz (Polish Academy of Sciences. Institute of Geological Sciences) ; Środoń, Jan (Polish Academy of Sciences. Institute of Geological Sciences) ; Franus, Wojciech (Lublin University of Technology. Department of Geotechnics) ; Uhlík, Peter (Comenius University. Department of Geology of Mineral Deposits) ; Banaś, Michal (Polish Academy of Sciences. Institute of Geological Sciences) ; Zieliński, Grzegorz (Polish Academy of Sciences. Institute of Geological Sciences) ; Čaplovičová, Maria (Comenius University. Department of Geology of Mineral Deposits) ; Franus, Malgorzata (Lublin University of Technology. Department of Geotechnics)
The K-Ar dating of glauconite has been used as an important stratigraphic tool for many decades. The application of this technique is limited to pure glauconites, free of detrital contamination by K-bearing phases, often not easy to detect. [...]
2009 - 10.1346/CCMN.2009.0570503
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 531-554  
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6.
11 p, 826.3 KB Evidence of degradation of triarylmethine dyes on texas vermiculite / Rytwo, Giora (MIGAL Galilee Technology Center) ; Gonen, Yotam (The Hebrew University of Jerusalem. Food and Environmental Quality Sciences) ; Huterer-Shveky, Reuma (The Hebrew University of Jerusalem. Food and Environmental Quality Sciences)
Synthetic dyes in industrial effluents pose a significant risk to human health and the environment, so much effort has been expended to degrade them using various methods, including the use of clay minerals as catalysts. [...]
2009 - 10.1346/CCMN.2009.0570504
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 555-565  
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7.
12 p, 2.5 MB Progressive formation of halloysite from the hydrothermal alteration of biotite and the formation mechanisms of anatase in altered volcanic rocks from limnos island, northeast aegean sea, greece / Papoulis, Dimitrios (University of Patras. Department of Geology) ; Tsolis-Katagas, Panagiota (University of Patras. Department of Geology) ; Kalampounias, Angelos G. (Institute of Chemical Engineering and High Temperature Chemical Processes (FORTH/ICE-HT)) ; Tsikouras, Basilios (University of Patras. Department of Geology)
Occurrences of halloysite-rich material in altered volcanic rocks, principally trachyandesites, dacites, and tuffs, extend over an area of ~1 km2 in the southwestern part of Limnos, Island, northeast Aegean Sea, Greece. [...]
2009 - 10.1346/CCMN.2009.0570505
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 566-577  
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8.
8 p, 400.6 KB Effect of silica polymerization on the oxalate-promoted dissolution of goethite / Eick, Matthew J. (Virginia Tech. Department of Crop and Soil Environmental Sciences) ; Luxton, Todd P. (U.S. Environmental Protection Agency, National Risk Management Research Laboratory) ; Welsh, Holly A. (Virginia Tech. Department of Crop and Soil Environmental Sciences)
Numerous studies have investigated the ligand-promoted dissolution of Fe (oxyhydr)oxides. In natural environments, inorganic ligands can compete with organic ligands for surface sites on (oxyhydr)oxides which may influence dissolution rates. [...]
2009 - 10.1346/CCMN.2009.0570506
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 578-585  
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9.
16 p, 1.2 MB Effect of the size of aggregates on pore characteristics of minerals measured by mercury intrusion and water-vapor desorption techniques / Jozefaciuk, Grzegorz (Institute of Agrophysics of the Polish Academy of Sciences)
The size, shape, and continuity of pores in mineral solids greatly influence the behavior of percolating liquids and solids in porous media, which has significant practical environmental implications. [...]
2009 - 10.1346/CCMN.2009.0570507
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 586-601  
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10.
14 p, 2.8 MB Clay mineralogy along the laterite profile in Hubei, South China : Mineral evolution and evidence for eolian origin / Hong, Hanlie (China University of Geosciences. Faculty of Earth Sciences) ; Li, Zhaohui (University of Wisconsin Parkside. Geosciences Department) ; Xiao, Ping (China University of Geosciences. Faculty of Earth Sciences)
In spite of many studies of laterite origins in various parts of the world, the origin of laterite in the middle to lower reaches of the Yangtze River is still a topic of debate, thus leaving doubts about the prevailing environmental and climatic conditions at the time. [...]
2009 - 10.1346/CCMN.2009.0570508
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 602-615  
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11.
22 p, 3.9 MB Clayey cap-rock behavior in H2O-CO2 media at low pressure and temperature conditions : An experimental approach / Kohler, Eric (Institut Français du Pétrole) ; Parra, Teddy (Institut Français du Pétrole) ; Vidal, Olivier (Université Joseph Fourier. Laboratoire de Géodynamique des Chaînes Alpines)
The storage of CO in geological reservoirs requires an understanding of the impact of CO on clay-rich sealing cap-rocks to identify and explore critical parameters that modify petrophysical properties such as permeability and fracturing. [...]
2009 - 10.1346/CCMN.2009.0570509
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 616-637  
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12.
11 p, 917.5 KB Functionalization of the interlayer surfaces of kaolinite by alkylammonium groups from ionic liquids / Letaief, Sadok (University of Ottawa. Centre for Catalysis Research and Innovation and Department of Chemistry) ; Detellier, Christian (University of Ottawa. Centre for Catalysis Research and Innovation and Department of Chemistry)
The objective of this studywas to design new, functional, nanostructured materials from the abundant claymineral kaolinite, in spite of development problems with the interlayer chemistry of kaolinite because of its non-swelling properties. [...]
2009 - 10.1346/CCMN.2009.0570510
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 638-648  
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13.
23 p, 1.4 MB The charge of component layers of illite-smectite in bentonites and the nature of end-member illite / Środoń, Jan (Institute of Geological Sciences PAN) ; Zeelmaekers, Edwin (University of Leuven. Laboratory for Applied Geology and Mineralogy) ; Derkowski, Arkadiusz (Institute of Geological Sciences PAN)
The nature of component layers of mixed-layer illite-smectite and their possible evolution in the course of illitization have been debated since the 1960s. The present study is a new attempt to solve these problems, using samples collected from diverse geological formations around the world. [...]
2009 - 10.1346/CCMN.2009.0570511
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 649-671  
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