搜索结果: 1-7 共查到“地质学 near-infrared”相关记录7条 . 查询时间(0.127 秒)
Trioctahedral entities in palygorskite: Near-infrared evidence for sepiolite-palygorskite polysomatism
palygorskite sepiolite XRD near-infrared spectroscopy dioctahedral trioctahedral polysomatism
2011/11/4
The mixed dioctahedral-trioctahedral character of Mg-rich palygorskite has been previously described by the formula
yMg5Si8O20(OH)2(OH2)4(1杫)[xMg2Fe2(1杧)Mg2Al2]Si8O20(OH)2(OH2)4, where y is the tri...
On the structure of palygorskite by mid- and near-infrared spectroscopy
IR spectroscopy palygorskite NIR spectroscopy Fe-rich hormite hydration
2011/11/4
The OH-structural characteristics of an iron-rich palygorskite from Western Macedonia, Greece (Gr-1) and an aluminous palygorskite from Florida (PFl-1) were examined by combined Fourier-transform near...
Characterization of Octahedral Substitutions in Kaolinites Using Near Infrared Spectroscopy
Kaolinites Near Infrared Spectroscopy Octahedral Substitution
2011/12/2
Abstract: Fourier transform infrared (FTIR) spectroscopy investigations in the near infrared (NIR) region of synthetic and natural kaolinites with various octahedral substitutions have been carried ou...
Near-infrared study of short-range disorder of OH and F in monoclinic amphiboles
Amphiboles OH-stretchingregion
2012/3/30
Amphibolesweresynthesizedalongthejoinstremolite¤C?uorotremolite,richterite¤C?u
rorichteriteandpotassic-richterite¤Cpotassic-?uororichteriteat75Cand1kbar P(H O).
2
Infraredspectraoftheamphiboleswere...
Use and Limitations of Second-Derivative Diffuse Reflectance Spectroscopy in the Visible to Near-Infrared Range to Identify and Quantify Fe Oxide Minerals in Soils
Crystal Field Bands Diffuse Reflectance Spectroscopy Goethite Hematite Intervalence Charge Transfer Iron Oxides Magnetite
2011/12/8
Abstract: We measured the visible to near-infrared (IR) spectra of 176 synthetic and natural samples of Fe oxides, oxyhydroxides and an oxyhydroxysulfate (here collectively called “Fe oxides”), and of...
The Near-Infrared Combination Band Frequencies of Dioctahedral Smectites, Micas, and Illites
Al content Dioctahedral smectites Micas NIR spectra
2011/12/30
The highest frequency near-infrared (NIR) combination bands for specimens of four species of mica—montmorillonite-beidellite, illite, chlorite, and kaolinite—were correlated with respect to Al2O3 cont...
Near-Infrared Reflectance Spectra of Mixtures of Kaolin-Group Minerals: Use in Clay Mineral Studies
Dickite Interstratification Kaolinite Near-infrared spectroscopy Order-disorder X-ray powder diffraction
2012/1/9
Near-infrared (NIR) reflectance spectra for mixtures of ordered kaolinite and ordered dickite have been found to simulate the spectral response of disordered kaolinite. The amount of octahedral vacanc...