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Abstract: A new protocol was developed to examine an assemblage of kaolinite-smectite in a buried horizon of a paleosol developed on gabbro parent material. The new extraction procedure appears suitab...
Abstract: The Mg-vermiculite from Santa Olalla has been treated with aliphatic amides—formamide (FM), acetamide (AM) and propionamide (PM)—in aqueous solution. These treatments produce the transformat...
Previous workhas described the structural and diffraction criteria for distinguishing between tv-1M, cv-lM, and m-lM illite varieties, wheretv-1M illite corresponds to a structure withtrans vacant(tv)...
Abstract: Structural transformations of illite-smectite samples of hydrothermal genesis with increasing contents of illite layers were studied by X-ray powder diffraction. The samples were K-saturated...
Serpentinite from Lancaster County, Pennsylvania, consists ofa variety offme-grained serpentine minerals, chlorite, randomly interstratified serpentine-chlorite, and a series of phases based on regula...
A very simple technique is proposed for a quantitative or semiquantitative interpretation of X-ray diffraction (XRD) patterns for two-component mixed-layer structures. It is suitable for a determinati...
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□...
A glass in the intermediate composition of montmorillonite and beidellite, 50/50 in mole ratio, was treated under a hydrothermal pressure of 100 MPa, in the temperature range from 250 to 500°C and dur...
The stacking order of a bi-ionic K/Mg vermiculite from Malawi (Nyasaland), has been determined from Weissenberg data. The sample corresponds to a K/Mg interstratified vermiculite containing 50% K laye...
X-ray diffraction, FTIR, and chemical analyses were performed on clay fractions (1? 祄, <0.1 祄), separated by means of size fractionations and high-gradient magnetic separation techniques, from a Cryor...
A dispersion-centrifugation-decantation procedure was used to isolate various particle size fractions from a sample of clay (<2 祄 fraction) separated by sedimentation from the Ap horizon of a Webster ...
Abstract: The gold decoration technique of electron microscopy was used to observe the microtopography of natural (001) surfaces of 1:1 regularly-interstratified mica/smectite minerals (expandable lay...
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 ...
Pillared, regularly and randomly interstratified illite/smectite (I/S) was prepared by interacting aluminum chlorohydrate with I/S in aqueous dispersion. I/S samples from Kinnekulle, Sweden, ranging i...
The validity of the saddle/001 method for estimating the percentage of smectite layers in randomly interstratified illite/smectite (US) minerals as a routine laboratory technique has been examined wit...

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