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Boron Release from Weathering of Illites, Serpentine, Shales,and Illitic/Palygorskitic Soils
Illitic/Palygorskitic Soils Boron Release
2011/11/11
Boron Release from Weathering of Illites, Serpentine, Shales,and Illitic/Palygorskitic Soils.
Amorphous Aluminum Hydroxide Formed at the Earliest Weathering Stages of K-Feldspar
Aluminum hydroxide Gibbsite Halloysite K-feldspar Weathering product
2011/12/27
Weathering products formed on the surface of K-feldspar in Yakushima Island, Japan were investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron micros...
The Dependence of Localized Crystallization of Halloysite and Kaolinite on Primary Minerals in the Weathering Profile of Granite
Biotite Granite Halloysite Kaolinite Weathering
2011/12/5
Abstract: The formation of kaolin-group minerals in the weathering profile of granite, under the humid, temperate climate as found in Korea, was studied by X-ray diffraction (XRD), scanning electron m...
Low-Temperature Acid Weathering in Newhaven, Sussex, United Kingdom, and Its Application to Theoretical Modeling in Radioactive Waste-Disposal Sites
Acid Weathering Aluminous Minerals Jarosite Radioactive-Waste Sites Silico-Aluminous Gels Thermodynamic Modeling
2011/12/6
Abstract: Tertiary weathered sediments located immediately to the west of the harbor at Newhaven, Sussex, UK, were investigated by examination of major and trace elements by scanning electron microsco...
Experimental observations of the effects of bacteria on aluminosilicate weathering
observations bacteria aluminosilicate weathering
2012/4/1
Mineral dissolution experiments using batch cultures of soil and groundwater bacteria were monitored with solution chemistry and various microscopic techniques to determine the effects of these organi...
Vermicular Kaolinite Epitactic on Primary Phyllosilicates in the Weathering Profiles of Anorthosite
Epitactic Kaolinite Pseudomorph Scanning Electron Microscopy Weathering
2011/12/8
Abstract: The microtextural changes in the kaolinization of primary phyllosilicates including biotite, sericite, clinochlore and muscovite were investigated by scanning electron microscopy (SEM) and m...
Formation of Vermicular Kaolinite from Halloysite Aggregates in the Weathering of Plagioclase
Halloysite Kaolinite Scanning Electron Microscopy Weathering
2011/12/8
Abstract: Halloysite and kaolinite coexist in anorthosite weathering profiles in the Sancheong district, Korea. X-ray diffraction (XRD) analysis on a transect of partially weathered anorthosites revea...
Weathering of Chlorite to a Low-Charge Expandable Mineral in a Spodosol on the Apennine Mountains, Italy
Chlorite Hydroxy-interlayers Smectite Spodosols
2011/12/1
Abstract: The clay fraction of a Spodosol and its parent rock in the Apennine mountains of central Italy were studied by powder X-ray diffraction (XRD) and infrared (IR) spectroscopy, to evaluate the ...
Artificial weathering of the ordinary chondrite Allegan: Implications for the presence of Cl- as a structural component in akaganéite
Artificial weathering ordinary chondrite Allegan presence of Cl- structural component akaganéite
2012/4/6
Asampleofanordinarychondritefall,Allegan,wasshownby FeMo!§ssbauerspectroscopytobeunweathered.Usingaerateddeionizedwaterat25 and0C,andinone
casewithdissolvedsaltsadded,anattemptwasmadetosimulatemeteor...
Mineralogical geochemical and mechanisms of fixation under oxidizing conditions inU the vicinity of the secondary U ore deposit at Koongarra, Australia,were examined usingtransmission and scanning e...
Analytical Electron Microscopic Study of the Noncrystalline Products Formed at Early Weathering Stages of Volcanic Glass
Formation Process Halloysite Noncrystalline Material Pumice Weathering Product
2011/12/22
Abstract: Formation processes of weathering products of pumice collected from a rhyolitic pyroclastic flow deposit were investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SE...
Hematite and Goethite from Duricrusts Developed by Lateritic Chemical Weathering of Precambrian Banded Iron Formations, Minas Gerais, Brazil
Hematite Goethite Laterite Mossbauer Spectrometry
2011/12/1
Abstract: The upper 15–20 m of a 200 m thick lateritic weathering profile on Precambrian itabirites of Capanema, Brazil, reveals a genetic pathway for the formation of hematitic and goethitic nodules ...
Mechanism and Conditions of Clay Formation during Natural Weathering of MSWI Bottom Ash
Clay formation Illite MSWI bottom ash Transmission Electron Microscopy
2011/12/27
Abstract: Municipal solid waste incinerator (MSWI) bottom ash is the slag-like material produced by the incineration of municipal waste and is predominantly composed of glassy constituents, which incl...
Weathering of Chlorite in a Quartz-Chlorite Schist: I. Mineralogical and Chemical Changes
Alteration Chlorite Kaolinite Uranium Ore Deposit Vermiculite Weathering
2011/12/23
Abstract: The weathering of chlorite, one of the major minerals of the host rock in the uranium ore deposit at Koongarra, Australia, was examined by X-ray diffraction (XRD) analysis, scanning electron...
Reaction Path Approach to Mineral Weathering Reactions
Geochemical modeling Gibbsite Kaolinite Microcline Reaction path Weathering
2011/12/28
Commercial spreadsheet programs allow calculation of reasonable reaction paths for weathering of silicate minerals in a dilute acidic aqueous solution. These calculations use reaction coefficients of ...