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Quantification and Characterization of Maghemite in Soils Derived from Volcanic Rocks in Southern Brazil
Aluminum Substitution Ferrimagnetic Maghemite Magnetic Susceptibility Magnetite Selective Dissolution
2011/12/7
Abstract: Many soils developed from volcanic rocks in southern Brazil exhibit spontaneous magnetization caused by the presence of fine-grained maghemite (γ-Fe2O3), but few attempts were made to quanti...
Rapid, Accurate Phase Quantification of Clay-Bearing Samples Using a Position-Sensitive X-Ray Detector
Absorption Correction Mudrocks Position-sensitive Detector Quantification X-ray Diffraction
2011/12/8
Abstract: The rapid phase quantification method using X-ray diffraction (XRD) with a position-sensitive detector (PSD), outlined by Cressey and Schofield (1996), has been extended to facilitate minera...
Illite Polytype Quantification using WILDFIRE?Calculated X-Ray Diffraction Patterns
Cis-vacant Illite Polytypes Quantification Trans-vacant X-ray Diffraction
2011/12/27
Illite polytype quantification allows the differentiation of diagenetic and detrital illite components. In Paleozoic shales from the Illinois Basin, we observe 3 polytypes: 1Md, 1M and 2M1. 1Md and 1M...
Quantification Curves for XRD Analysis of Mixed-Layer 14A/10A Clay Minerals
Biotite Chlorite Interstratification Mixed-layer quantification Vermiculite
2011/12/28
Using theoretical profiles of diffracted X-ray intensity for interstratification between layers having d-spacings around 14.3 侌 and 10.1 侌, a series of diagrams was derived from which the proportion o...
Simultaneous Mineralogical Quantification and Chemical Characterization of Soil Clays
Chemistry Illite Mass-balance Protoillite Quantify Smectite
2011/12/29
A new chemical mass balance technique has been developed for simultaneous mineralogical quantification and chemical characterization of soil clays. The procedure includes separation of the whole clay ...
Comparison of Four Elemental Mass Balance Methods for Clay Mineral Quantification
Elemental mass balance Marquardt algorithm Non-linear models Numerical optimization Quantification
2011/12/29
The quantification of the relative mineralogical composition of clay mixtures by powder X-ray diffraction or chemical mass balance methods has been severely hampered by a lack of representative standa...
Randomly Interstratified Serpentine/Chlorite: Its Detection and Quantification by Powder X-ray Diffraction Methods
Interstratification Mixed-layered Serpentine/chlorite Tuscaloosa X-ray diffraction line broadening
2011/12/30
X-ray diffraction studies of the pore-lining chloritic mineral from the Tuscaloosa Formation disclose a marked pattern of odd-order line broadening for the 001 to the 00,16 reflections. The odd-order ...
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 ...
Quantification Curves for Mica/Smectite Interstratifications by X-ray Powder Diffraction
Ethylene glycol Interstratification Mica/smectite Reichweite structures X-ray powder diffraction
2012/1/9
X-ray powder diffraction (XRD) patterns for many interstratified mica/glycolated smectites were calculated by changing combinations of probabilities and transition probabilities of two-component layer...
Quantification Curves for the X-Ray Powder Diffraction Analysis of Mixed-Layer Kaolinite/Smectite
Ethylene glycol Interstratification Kaolinite/smectite Mixed-layer quantification X-ray powder diffraction
2012/1/12
X-ray powder diffraction patterns for many interstratified kaolinite/glycolated smectites were calculated by changing combinations of probabilities and transition probabilities of two component layers...
Curves for the Quantification of Mica/Smectite and Chlorite/Smectite Interstratifications by X-ray Powder Diffraction
Chlorite/smectite Ethylene glycol Interstratification Mica/smectite Mixed layer quantification X-ray powder diffraction
2012/2/2
X-ray powder diffraction intensities for many interstratified structures of mica/smectite and chlorite/smectite were calculated by changing combinations of probabilities and transition probabilities o...