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Clays and Clay Minerals

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Clays and Clay Minerals 7 records found  Search took 0.03 seconds. 
1.
17 p, 2.7 MB Low-temperature hydrothermal metamorphic mineralization of island-arc volcanics, South Apuseni Mountains, Romania / Miron, George Dan (Babeş-Bolyai University. Department of Geology) ; Neuhoff, Philip S. (University of Florida. Department of Geological Sciences) ; Amthauer, Georg (University of Salzburg. Department of Material Sciences)
The island-arc volcanics situated in the eastern part of the Cǎpi{dotless}îlnaş-Techereu nappe (South Apuseni Mountains, Romania) were studied to evaluate the temperature, fluid properties, and mineral chemistry during low-temperature metamorphism. [...]
2012 - 10.1346/CCMN.2012.0600101
Clays and Clay Minerals, Vol. 60, Núm. 1 (2012) , p. 1-17  
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2.
14 p, 2.7 MB Origin of saponite-rich clays in a fossil serpentinite-hosted hydrothermal system in the crustal basement of the Hyblean Plateau (Sicily, Italy) / Manuella, Fabio C. (Università di Catania. Dipartimento di Scienze Biologiche, Geologiche e Ambientali) ; Carbone, Serafina (Università di Catania. Dipartimento di Scienze Biologiche, Geologiche e Ambientali) ; Barreca, Giovanni (Università di Catania. Dipartimento di Scienze Biologiche, Geologiche e Ambientali)
A diapiric intrusion of clays in the Carlentini Formation (Tortonian) was discovered in a quarry at S. Demetrio High (Hyblean Plateau, Sicily, Italy). Seven clay samples were analyzed by different analytical methods, including X-ray powder diffraction (XRD) and Fourier-transform infrared (FTIR) spectroscopy, to determine the composition and mechanism of formation (sedimentary vs. [...]
2012 - 10.1346/CCMN.2012.0600102
Clays and Clay Minerals, Vol. 60, Núm. 1 (2012) , p. 18-31  
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3.
8 p, 648.8 KB Response surface optimization for activation of bentonite using microwave irradiation / Petrović, Srdjan (University of Belgrade. Institute of Chemistry, Technology and Metallurgy. Department of Catalysis and Chemical Engineering.) ; Rožić, Ljiljana (University of Belgrade. Institute of Chemistry, Technology and Metallurgy. Department of Catalysis and Chemical Engineering.) ; Vuković, Zorica (University of Belgrade. Institute of Chemistry, Technology and Metallurgy. Department of Catalysis and Chemical Engineering) ; Novaković, Tatjana (University of Belgrade. Institute of Chemistry, Technology and Metallurgy. Department of Catalysis and Chemical Engineering) ; Stanisavljev, Dragomir (University of Belgrade. Faculty of Physical Chemistry)
Microwave irradiation as a means for heating bentonites during acid activation has been investigated in the past but it has never been optimized for industrial applications. The purpose of this study was to apply a factorial 2 experimental design to a Serbian bentonite in order to determine the influence of microwave heating on the acid-activation process. [...]
2012 - 10.1346/CCMN.2012.0600103
Clays and Clay Minerals, Vol. 60, Núm. 1 (2012) , p. 32-39  
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4.
11 p, 469.4 KB A theoretical study of the effect of carboxyl hydroxamic acid on the flotation behavior of diaspore and aluminosilicate minerals / Jiang, Yuren (Central South University. College of Chemistry and Chemical Engineering) ; Pan, Yafei (Central South University. College of Chemistry and Chemical Engineering) ; Chen, Dan (Central South University. College of Chemistry and Chemical Engineering) ; Wang, Fangping (Central South University. College of Chemistry and Chemical Engineering) ; Yan, Lingling (Central South University. College of Chemistry and Chemical Engineering) ; Li, Guiyin (Central South University. College of Chemistry and Chemical Engineering) ; Xue, Yulan (Central South University. College of Chemistry and Chemical Engineering)
The collector for separating diasporic bauxite serves as a type of flotation reagent by adsorbing selectively on diaspore to make it hydrophobic enough to separate it from the aluminosilicates. Although the flotation process is considered economical in the desilication of Chinese diasporic bauxite, the existing collectors fail to separate these ores because of their poor adsorption selectivity over other minerals. [...]
2012 - 10.1346/CCMN.2012.0600105
Clays and Clay Minerals, Vol. 60, Núm. 1 (2012) , p. 52-62  
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5.
13 p, 1.8 MB Mineral compositional trends and their correlations with petrophysical and well-logging parameters revealed by QUANTA + BESTMIN analysis : Miocene of the Carpathian Foredeep, Poland / Środoń, J. (Institute of Geological Sciences PAN) ; Kawiak, T. (Institute of Geological Sciences PAN)
This study uses the data from Miocene rocks of the Carpathian Foredeep to test the performance of the computer programs QUANTA and BESTMIN in aiding the interpretation of geophysical log data. These programs were designed to help trace trends in the mineral composition of rocks, the chemical composition of minerals, and the effects of these data on petrophysical and geophysical logging parameters. [...]
2012 - 10.1346/CCMN.2012.0600106
Clays and Clay Minerals, Vol. 60 Núm. 1 (february 2012) , p. 63-75  
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6.
13 p, 2.3 MB Effects of weathering on glauconite : Evidence from the Abu Tartur Plateau, Egypt / Pestitschek, Brigitte (University of Vienna. Department of Geodynamics and Sedimentology) ; Gier, Susanne (University of Vienna. Department of Geodynamics and Sedimentology) ; Essa, Mahmoud (University of Assiut. Department of Geology) ; Kurzweil, Hans (University of Vienna. Department of Geodynamics and Sedimentology)
Recognizing weathering effects is significant for any work carried out on glauconites at the surface. The mineralogy and chemistry of glauconite grains exposed to weathering in a hot arid climate for a maximum of 42 y were studied here. [...]
2012 - 10.1346/CCMN.2012.0600107
Clays and Clay Minerals, Vol. 60, Núm. 1 (2012) , p. 76-88  
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7.
10 p, 1.1 MB Role of chitin in montmorillonite fabric : Transmission electron microscope observations / Kim, Jinwook (Yonsei University. Department of Earth System Sciences) ; Furukawa, Yoko (Stennis Space Center. Naval Research Laboratory, Seafloor Sciences Branch) ; Curry, Kenneth J. (University of Southern Mississippi. Department of Biological Sciences) ; Bennett, Richard H. (SEAPROBE, Inc.)
Particle concentration, charge, solution chemistry (i. e. ionic strength), and the nature of organic matter (OM) are the major factors controlling particle flocculation in aqueous environments. In the present study, the nature of clay fabric associated with clay-OM interaction at a range of ionic strengths was the focus. [...]
2012 - 10.1346/CCMN.2012.0600108
Clays and Clay Minerals, Vol. 60, Núm. 1 (2012) , p. 89-98  
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