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New Minerals Names
New mineral names
2012/4/1
The mineral occurs as rectangular, twinned crystals, up
to 0.5 x 0.3 x 0.7 mm, and as compact, massive, white
material in a 5 x 15 mm vug in a single specimen. Crys-
tals are colorless, transparent...
Inter-Basinal Comparison of the Diagenetic Evolution of Illite/Smectite Minerals in Buried Shales on the Basis of K-Ar Systematics
Burial Diagenesis Illite/Smectite Mixed Layers Illitization K-Ar Data Sedimentary Basins Shales
2011/12/27
The K-Ar systematics of illite/smectite (I/S) mixed layers in deeply buried shales from the Gulf Coast, the North Sea and the Mahakam Delta basins have been compared to provide additional perspectives...
Characterization of Soil Clay Minerals: Decomposition of X-ray Diffraction Diagrams and High-Resolution Electron Microscopy
Acid Soil Decomposition of X-ray Patterns High-Charge Smectite High-Resolution Electron Microscopy Illite/Smectite Mixed Layers X-ray Diffraction
2011/12/27
Fine clays (<0.1 祄) extracted from an acid soil developed in a granite saprolite from the Massif Central, France, were characterized by X-ray diffraction (XRD) using a curve decomposition program, and...
Diagenesis and Metamorphism of Clay Minerals in the Helvetic Alps of Eastern Switzerland
Clay mineralogy Diagenesis Helvetic Alps Incipient metamorphism Switzerland
2011/12/1
Abstract: Helvetic sediments from the northern margin of the Alps in eastern Switzerland were studied by clay mineralogical methods. Based on illite “crystallinity” (Kübler index), the study area is d...
Thermodynamics of order-disorder in minerals: II. Symmetric formalism applied to solid solutions
Thermodynamics order-disorder minerals II. Symmetric formalism solutions
2012/4/9
The thermodynamics of order-disorder in mineral solid solutions are handled withsym-metric formalism, whereby the mineral is treated as a solid solution between an indepen-dent set of end-members with...
Thermodynamics of order-disorder in minerals: I. Symmetric formalism applied to minerals of fixed composition
Thermodynamics order-disorder minerals I. Symmetric formalism composition
2012/4/9
Thermodynamics of order-disorder in minerals maybe approached by treating the min-eral as a solid solution between an independent set of end-members withwhich the range of possible states of ordering ...
The solubility of H2O in nominally anhydrous mantle minerals using 1H MAS NMR
H2O anhydrous mantle minerals 1H MAS NMR
2012/4/9
The dissolved H20 concentrations of experimentally produced, Fe-free, nominally an-hydrous minerals (NAMs) have been measured using, for the first time, IH magic-angle-spinning NMR spectroscopy. Atlea...
Comparison of Techniques for Determining the Fractal Dimensions of Clay Minerals
Adsorption Clay Fractal NMR Small-angle x-ray scattering
2011/12/27
Small-angle X-ray scattering (SAXS), adsorption and nuclear magnetic resonance (NMR) techniques were used to determine the fractal dimensions (D) of 3 natural reference clays: 1) a kaolinite (KGa-2); ...
The Dehydroxylation of the Kaolinite Clay Minerals using Infrared Emission Spectroscopy
Dehydroxylation Dickite Emission Halloysite Hydroxyl Infrared Kandite Kaolinite Mechanism of dehydroxylation
2011/12/27
The dehydroxylation of a series of the kaolinite clay minerals, kaolinite, halloysite and dickite, has been investigated by Fourier transform in situ infrared emission spectroscopy over a temperature ...
Reduction of Nitrate By Fe2+ in Clay Minerals
Clayey till Exchangeable ferrous iron Illite Mossbauer Nitrate Oxidized Structural ferrous iron Unoxidized
2011/12/27
In the 12 km2 catchment area of Syv creek, Denmark, moderate to high concentrations of nitrate (NO3−) occurred in the upper part of the oxidized zone (oxic-I), but dropped within the lower subox...
Redox Characterization of the Surfaces of Seven Iron-Bearing Minerals: Use of Molecular Probes and UV-Visible Spectroscopy
Electron activity Indicators Iron-beating minerals Redox potential Surface acidity UV-visible spectroscopy
2011/12/27
Redox properties of iron-bearing mineral surfaces may play an important role in controlling the transport and transformation of pollutants into ground waters. Suspensions of seven iron-bearing mineral...
Geochemical alteration of pyrochlore group minerals: Betafite subgroup
pyrochlore group minerals Betafite subgroup
2012/4/6
Relatively low-temperature, secondary alteration is common in samples of metamict betafite and initially proceeds bythe substitution mechanisms ANaYF--+ADYD,ACaYO--+ADYD,and ACaXO--+ADXD.Alteration is...
Quantitative analysis of alkali feldspar minerals using Rietveld refinement of X-ray diffraction data
Quantitative analysis alkali feldspar minerals X-ray diffraction data
2012/4/6
Microcline +albite and albite + quartz standard mixtures werequantitatively analyzed using Rietveld refinement to investigate the reliability of the method. The method was also applied to the determin...
Crystal chemistry and IR spectroscopy of Cl- and SO4-bearing cancrinite-like minerals
Crystal chemistry IR spectroscopy Cl- SO4-bearing cancrinite-like minerals
2012/4/6
CI-and S04-bearing cancrinite-like mineralsfrom Italian localities werestudied by meansofEPMA,X-raydiffraction, and IR spectroscopy to relate their chemicalcompo-sition, IR data, and structural featur...
Two-site multi-cation ordering-disordering in minerals: An alternative kinetic model
Two-site multi-cation ordering-disordering minerals kinetic model
2012/4/6
Mueller'smodelhasbeenwidelyapplied to modelingkineticexperimental data onthe ordering-disordering ofcations betweentwo nonequivalent sites.Thismodelis validonly for pure ornearly purebinary systems. F...