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Showing 1 to 20 of 83 for “"clay mineral"”.
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Sustainable ball clay mineral extraction.
… law and policy has on access to ball clay mineral resources in the Wareham Basin, Dorset. Ball clay is a non-renewable resource and planning for its sustainable use involves a consideration of current and future exploitation needs to meet demand as well as the protection of the natural …
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Clay mineral catalysed oxidation of phenols
… iron(III) oxides within aluminosilicate clay minerals (Fulacolor™ and bentonite) and employ them as oxidation catalysts for phenolic compounds using hydrogen peroxide as oxidant in Fenton or photo-Fenton processes. Thermal degradation of phenol proceeded very slowly; photocatalytic …
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Structural Aspects of Clay Mineral Alterations
Made available in DSpace on 2014-12-09T20:34:22Z (GMT). No. of bitstreams: 1 6612322.pdf: 3152395 bytes, checksum: ec585eed0eaf407aa79cd2e74e444e39 (MD5) Previous issue date: 1966
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Hydration and swelling of clay mineral systems
Typewritten
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Clay Mineral Facies of Certain Pennsylvanian Underclays
Made available in DSpace on 2014-12-04T19:14:15Z (GMT). No. of bitstreams: 1 6202946.pdf: 4809088 bytes, checksum: 39397b2d13282b42750ad5eb6cbdf9bd (MD5) Previous issue date: 1962
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Clay Mineral Composition of Till in Northeastern Ohio
Made available in DSpace on 2014-12-04T19:13:32Z (GMT). No. of bitstreams: 1 0016389.pdf: 1813814 bytes, checksum: a3cbe2a016064b6248cdecc261f2a33b (MD5) Previous issue date: 1956
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Atomic Force Microscopy Study of Clay Mineral Dissolution
… of 2:1 phyllosilicates (biotite and the clays montmorillonite, hectorite, and nontronite) with respect to acid dissolution using in situ atomic force microscopy (AFM). Three techniques are described which make it possible to fix these minerals and other small particles to a suitable …
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The kinetics and thermodynamics of clay mineral reactions
… abundance, high surface area, and reactivity clay minerals are important participants in the diagenesis of clastic rocks. The kinetic and thermodynamic stability of clays is in general poorly understood. This dissertation research measured the rate of transformation of kaolinite to …
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Spectroscopic and thermal analysis of clay mineral-organic composites.
Composites of clay minerals have been prepared with organic monomers for subsequent study upon polymerisation. Particular combinations of clays and organic species have enabled three unique systems to be studied. The first involves the intercalation of the clay minerals Kaolin and Halloysite with …
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Caesium and strontium exchange at specific clay mineral sites
The sorption of caesium and strontium onto clay minerals by exchange with other, charge compensating cations was studied by batch experiments. It was demonstrated that, for clay minerals with a net negative charge arising from isomorphous substitution within the crystal lattice, caesium and …
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Soils and soil clay mineral formation in the Virginia Blue Ridge and Piedmont provinces
… prolonged chemical weathering, physical and mineralogical differences exist between soil types which are due largely to changes in the parent rock, and to a lesser extent changes in the topography. Soils developed from different source rocks can be distinguished on the basis of color, …
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Clay Mineralogy and Clay Mineral Orientation of Shales and Claystones Overlying Coal Seams in Illinois
Made available in DSpace on 2014-12-04T19:14:27Z (GMT). No. of bitstreams: 1 6402937.pdf: 5217647 bytes, checksum: 7f0daa848c953b57149f5c7bd412cf29 (MD5) Previous issue date: 1963
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Factors Influencing the Post-Earthquake Shear Strength
Although clays are generally considered stable materials under seismic conditions, recent failures initiated in clay layers after earthquakes have emphasized the need to study the cyclic and post-cyclic behavior of these materials. Moreover, if strength loss as a result of cyclic loading were to …
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Smectite/Illite Distribution and Diagenesis in the South Timbalier Area, Northern Gulf of Mexico
Clays and clay mineral distribution studies are important for understanding the geological history of the Gulf of Mexico Basin, but few studies document any subsurface clay mineral distribution in the Gulf of Mexico. Shale samples from nine wells (30 samples) in the South Timbalier protraction were …
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Clay mineral formation and fluid-rock interaction in fractured crystalline rocks of the Rhine rift system : case studies from the Soultz-sous-Forêts granite (France) and the Schauenburg Fault (Germany)
… system, based on the analytical investigation of clay mineral assemblages. It evaluates the argillite mineralizations along faults and fracture zones at key tectonic positions in relation to the upper Rhine graben rift structure and assesses the timing and episodic nature of clay mineral formation …
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Clay petrology of Mesozoic to recent sediments of central western North Island, New Zealand
NOTE: Missing pages 177-78 and 181-82. Clay mineral, bulk mineral and chemical data for Mesozoic to Recent onshore sediments and Recent western shelf surficial sediments from central Western North Island are presented with the aim of determining the significance of areal and stratigraphic …
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Cloud condensation nucleus activity comparison of dry- and wet-generated mineral dust aerosol : the significance of soluble material
This study examines the interaction of clay mineral particles and water vapor to determine the conditions required for cloud droplet formation. Droplet formation conditions are investigated for two common clay minerals, illite and sodium-rich montmorillonite, and an industrially derived sample, …
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Clay Mineralogy and Organic Carbon Associations in Two Adjacent Watersheds, New Zealand
… and associated OC to the adjacent margin. Clay mineral compositions from specimens of bedrock, volcanic soils and tephras, suspended river sediment, and recent marine sediments were studied. Identification of the clay minerals was made chiefly by X-ray (XRD), infrared (FTIR), and selective …
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