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Semiquantitative Chemical Analysis of Asbestos Fibers and Clay Minerals with an Analytical Electron Microscope
Amphibole Asbestos Chrysotile Morphology Structure
2012/2/10
By using a transmission electron microscope equipped with an energy dispersive spectrometer, it was possible to detect the morphological, structural, and chemical characteristics of individual asbesto...
Synthesis of Hydrotalcite-Like Compounds and their Physico-Chemical Properties—The Systems Mg2+-Al3+-SO42− and Mg2+-Al3+-CrO42−
Synthesis Hydrotalcite-Like Compounds Physico-Chemical Properties
2011/11/18
Abstract: Hydrotalcite-like compounds [MgI − xAlx(OH)2]x+ [Ax/22−, mH2O]x−, where A2− is SO42− or CrO42− and x ≇ 0.25, were prepared by a coprecipitation meth...
A Relationship between Crystallographic Properties of Illite and Chemical Properties of Extractable Organic Matter in Pre-Phanerozoic and Phanerozoic Sediments
Crystallographic Properties Illite Chemical Properties Extractable Organic Matter Pre-Phanerozoic Phanerozoic Sediments
2012/2/13
Crystallographic properties of illite and chemical properties of organic matter in various mudstones ranging in age from Archean to Miocene were investigated. The breadth of the (001) X-ray powder dif...
Analysis of Iron-Bearing Clay Minerals by Electron Spectroscopy for Chemical Analysis (ESCA)
Clay Minerals Electron Spectroscopy Chemical Analysis (ESCA)
2012/2/13
Nontronite and biotite were analyzed by Electron Spectroscopy for Chemical Analysis (ESCA). Both minerals yielded ESCA spectra with well-defined peaks and the elements identified by the ESCA spectra w...
Structural Analysis of Sepiolite by Selected Area Electron Diffraction—Relations with Physico-Chemical Properties
Structural Analysis of Sepiolite Area Electron Diffraction Physico-Chemical Properties
2011/11/18
Abstract: The electron structural analysis of a Madagascar sepiolite (Ampandrandava) was carried out by selected area electron diffraction obtained from monocristals. Fourier projections, derived from...
Experimental Alteration of a Chlorite into a Regularly Interstratified Chlorite-Vermiculite by Chemical Oxidation
Chlorite Chlorite-Vermiculite Chemical Oxidation
2012/2/13
A IIb orthochlorite (brunsvigite), from the chloritic metabasalt in the Middletown Valley of Maryland, was altered to a regularly interstratified chlorite—vermiculite after four months reaction in sat...
The Syntheses of Hydrotalcite-Like Compounds and Their Structures and Physico-Chemical Properties I: The Systems Mg2+-Al3+-NO3−, Mg2+-Al3+-Cl−, Mg2+-Al3+-ClO4−, Ni2+-Al3+-Cl− and Zn2+-Al3+-Cl−
Syntheses Hydrotalcite-Like Compounds Physico-Chemical Properties
2012/2/15
The basic salts of this system were prepared and their structures and physico-chemical properties were studies by electron microscopy, chemical analysis, X-ray powder diffraction, thermal analysis, i....
The Nature of Garnierites—I Structures, Chemical Compositions and Color Characteristics
Nature of Garnierites
2011/11/18
Abstract: X-ray diffraction patterns of garnierites indicate that most samples resemble serpentine-group minerals or a talc-like mineral, or a mixture of these forms, and give respectively 7 Å a...
Comparative Chemical Composition of Sediment Interstitial Waters
Comparative Chemical Composition Sediment Interstitial Waters Element ratios
2012/2/17
Interstitial waters squeezed from modern sediments with a 100 psi pressure at laboratory temperature (23°C are depleted in K and Ca and enriched in Mg when compared to the solutions obtained at in sit...
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...
If a series of rock samples with granitic composition in various stages of chemical weathering is ground in a mortar with distilled water and the pH of the slurry produced is determined, it will be ev...