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Dissolution of well and poorly crystallized kaolinites: Al speciation and effects of surface characteristics
crystallized kaolinites surface characteristics dissolution behavio well-crystallized poorly crystallized
2012/3/31
This study compared surface characteristics and dissolution behavior of well-crystallized (KGa-1b)
and poorly crystallized (KGa-2) kaolinite standards. Atomic force microscopy (AFM) revealed that
pa...
Dissolution of the periclase (001) surface: A scanning force microscope study
minerals study periclase surface SFM
2012/3/30
IncontrasttomostionicmineralsstudiedbySFM,thepericlase(001)surfacedissolves
notbyretreatofmonolayerstepsparallelto(001),butbyretreatofaroughsurface 2,dissolutionhasanadditionalcontributionfromretreat...
Aqueous Pb sorption by hydroxylapatite: Applications of atomic force microscopy to dissolution, nucleation, and growth studies
Aqueous Pb sorption hydroxylapatite atomic force nucleation growth studies
2012/3/30
A combination of atomic force microscopy, scanning election microscopy, transmission electron microscopy, energy dispersive spectroscopy, electron diffraction, and X-ray dif-fraction were used to stud...
Surface site-specific interactions of aspartate with calcite during dissolution: Implications for biomineralization
Surface site-specific aspartate with calcite dissolution biomineralization
2012/4/6
Calciteoccurswidelyasamineralcomponentintheexoskeletonsandtissuesofmarine
andfreshwaterinvertebrates.Matrixmacromoleculesinvolvedinregulatingthebiological
growthofcalciteintheseorganismsareknowntosh...
Ab initio calculations on aluminosilicate Q3 species: Implications for atomic structures of mineral surfaces and dissolution mechanisms of feldspars
Ab calculations aluminosilicate Q3 species Implications for atomic structures dissolution mechanisms of feldspars
2012/4/6
Molecularorbitalcalculations onvariousaluminosilicate Q3T-OHandbridging0spe-cieswereperformed to modelatomic structural changesonmineralsurfacesthat occuras
a function ofpH. Calculatedvibrational fre...
Dissolution Process of Phlogopite in Acid Solutions
Alteration Biotite Dissolution Interstratification Leached layer Mica/vermiculite Phlogopite Transmission electron microscopy Vermiculite
2011/12/1
Abstract: The alteration experiments of phlogopite with 0.01 N HCl solution containing 0.1 M NaCl at 50°, 80° and 120°C have been carried out to aid in the understanding of the dissolution process of ...
Evolution of Hematite Surface Microtopography Upon Dissolution by Simple Organic Acids
Atomic force microscope Clay mineral surfaces Dissolution Hematite Organic acids
2011/12/1
Abstract: The surface microtopography of hematite over the course of dissolution in oxalic and citric acids was examined by in-situ and ex-situ atomic-force microscopy, In-situ imaging of the basal-pl...
Smectite-Illite Transition in Barbados Accretionary Wedge Sediments: TEM and AEM Evidence for Dissolution/Crystallization at Low Temperature
Accretionary wedge AEM analyses Barbados Electron diffraction Fluid-sediment interaction Illite Mixed-layer Smectite TEM images
2011/12/1
Abstract: Sediments from depths to 670 m in the Barbados accretionary complex and transecting the décollement zone have been studied by transmission and analytical electron microscopy (TEM/AEM). The s...
Site Occupancy in Nontronite Studied by Acid Dissolution and M鰏sbauer Spectroscopy
Acid dissolution Mossbauer spectroscopy Nontronite Tetrahedral iron
2011/11/30
Abstract: The dissolution of two Ca2+-exchanged nontronite samples has been studied in 10% HCl. Early acid-dissolution studies (Osthaus, 1954) have indicated that after two hours of dissolution most o...
Extraction of Iron Oxides from Sediments Using Reductive Dissolution by Titanium(III)
Dissolution Dithionite Extraction Goethite Hematite Reduction Titanium(III)
2012/1/4
A new iron oxide dissolution method designed to measure the abundance of “free” Fe oxide phases and associated elements in soils and sediments has been tested. The method employs a ternary complex of ...
Secondary Phase Formation during Nuclear Waste-Glass Dissolution
Dissolution Glass Hydration Manganese oxide Nuclear waste Serpentine Smectite Uranium
2012/1/5
Secondary minerals formed during simulated weathering of nuclear waste #asses have been identified by analytical electron microscopy. A complete description of the reacted #ass, from the outermost sur...
Kinetics of Dissolution of Noncrystalline Oxides and Crystalline Clay Minerals in a Basic Tiron Solution
Chlorite Dissolution Kaolinite Montmorillonite Noncrystalline Sepiolite Tiron solution
2012/1/4
The dissolution behavior of five noncrystalline oxides, montmorillonite, kaolinite, chlorite, and sepiolite in a basic tiron solution was studied at pH 10.5 and 80°C. The results show that for montmor...
Weathering of Hornblende to Ferruginous Products by a Dissolution-Reprecipitation Mechanism: Petrography and Stoichiometry
Gibbsite Goethite Hornblende Iron Kaolinite Neoformation Petrography Scanning electron microscopy Weathering
2012/1/9
Hornblende of the Carrol Knob mafic complex (southern Blue Ridge Mountains, North Carolina) has weathered under humid, temperate conditions. Hornblende weathering appears to have been a dissolution-re...
Quantification of Crystalline and Noncrystalline Material in Ground Kaolinite by X-ray Powder Diffraction, Infrared, Solid-State Nuclear Magnetic Resonance, and Chemical-Dissolution Analyses
Chemical dissolution Dry grinding Infrared spectroscopy Kaolinite Noncrystalline Nuclear magnetic resonance X-ray powder diffraction
2012/1/5
The capabilities of X-ray powder diffraction (XRD), infrared absorption (IR), solid-state magic-angle-spinning nuclear magnetic resonance (MAS-NMR), and chemical dissolution methods were assessed for ...
Acid Dissolution of Akaganieite and Lepidocrocite: The Effect on Crystal Morphology
Akaganeite Dissolution Iron Lepidocrocite Morphology Transmission electron microscopy
2012/1/9
The rate of dissolution of akaganéite in HCl increased with time over the bulk of the reaction leading to a sigmoid dissolution vs. time curve. The bulk of the dissolution of lepidocrocite could be de...