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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...
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...
AnexperimentalmethodforthedeterminationofAb-OrexsolutionandAl-Siordering inalkalifeldsparisdescribed.Powderinfraredspectroscopywasusedtomeasurespectra1 inthespectralrangebetween50and1500cm usingabo...
Amphibolesweresynthesizedat750C,1kbar(H O)onthebinaryjoins(nickel, magnesium)-richteriteand(magnesium,cobalt)-richterite.Structuralvariationsandsiteoc- cupancieswerecharacterizedbyRietveldstructurer...
Infrared spectroscopy is used to distinguish between octahedral and tetrahedral substitutions in an interstratified illite-smectite clay. The Hofmann-Klemen (Li) test suggests that the AlMg□ and FeMg□...
Iron-chromium hydroxides are important solid phases governing the aqueous concentrations of Cr(III) in soils and fly ashes. Although direct identification of noncrystalline (Fe,Cr)(OH)3 is difficult, ...
A corrensite from Taro Valley, Italy, was studied by infrared analysis at different temperatures in the natural state and after exchange with seven different cations. The vibrational bands in the OH-s...
Thin clay films prepared from aqueous suspensions of the potassium or sodium salt of picloram (4-amino-3,5,6-trichloropicolinic acid) with Al-, Fe-, or Cu-saturated montmorillonite or with montmorillo...
An infrared method has been developed for estimating kaolinite in sediments. Hydroxyl stretching bands of kaolinite in sediments can be recorded by using a differential technique which eliminates the ...
Highly significant differences are observed between the methyl derivatives of attapulgite, produced when this mineral is reacted with (CH3)2Si(OC2H5)2, in the presence or in absence of HCl. In the fir...
Highly significant differences are observed between the methyl derivatives of attapulgite,produced when this mineral is reacted with (CHz)zSi(OCzHs)2, in the presence or in absence of HCI. In the firs...

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