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Swelling Pressure Calculated from Mineralogical Properties of a Jurassic Opalinum Shale, Switzerland
Gouy double layer theory Mineralogical composition Shale Soil mechanics Surface area Surface charge Swelling pressure
2012/2/2
Nineteen drill core samples of lower Dogger opalinum shale from wells drilled in connection with a tunnel project near Brugg, northern Switzerland, were investigated. The shale is a well known swellin...
Mineralogical and Morphological Evidence for the Formation of Illite at the Expense of Illite/Smectite
Diagenesis Illite Illite/smectite Morphology Scanning electron microscopy X-ray powder diffraction
2012/2/1
The conversion of smectite to illite by way of a mixed-layer illite/smectite (I/S) series was found to be the major depth-related reaction in clay-mineral assemblages from two cored sedimentary sequen...
Spherical Kaolinite: Synthesis and Mineralogical Properties
Halloysite High resolution electron microscopy Infrared spectroscopy Kaolinite Spherules Synthesis X-ray powder diffraction
2012/2/7
Spherical kaolinite has been synthesized for the first time from noncrystalline aluminosilicate material in hydrothermal experiments conducted between 150° and 250°C and under autogenous vapor pressur...
Mineralogical Transformations during Weathering of Lignite Overburden in East Texas
Lignite Oxidation Reclamation Smectite Soil Weathering
2011/11/25
Abstract: Mineralogical weathering sequences in sediments overlying lignite beds were investigated in a core (27 m deep) from Calvert, Robertson County, northeast Texas. Weathering trends were evaluat...
Biotite Alteration in Deeply Weathered Granite. I. Morphological, Mineralogical, and Chemical Properties
Biotite Goethite Mixed-layer mineral SEM morphology Vermiculite Weathering
2012/2/10
Biotite in deeply weathered granitic rocks in southwestern Australia has altered to exfoliated grains composed of biotite, mixed-layer clay minerals, kaolinite, vermiculite, gibbsite, goethite, and he...
Quantitative Clay Mineralogical Analyses from the Bulk Chemistry of Sedimentary Rocks
Mudstones Sedimentary
2012/2/10
A technique suitable for computer application has been developed whereby whole rock major element analyses are corrected for X-ray detectable nonclay minerals and used to set up simultaneous equations...
Effects of Amorphous Constituents on Some Mineralogical and Chemical Properties of a Panamanian Latosol
Amorphous Constituents Mineralogical Chemical Properties Panamanian Latosol
2012/2/20
X-ray diffraction studies revealed sesquioxide coatings existed on the surfaces of the clay minerals. Mineralogically, the soil was composed of kaolin, amorphous minerals, hydrated iron and aluminum o...
Mineralogical and Geochemical Study of Clay Mineral Transformations in the Sedimentary Triassic Jura Basin (France)
Mineralogical Geochemical Study Clay Mineral Transformations Sedimentary Triassic Jura Basin
2012/2/21
A detailed study of sediments from the Triassic of the French Jura shows that clay minerals vary continuously with the facies. Near the coasts of the Jura Sea, sediments consisted of sandy, continenta...