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Preliminary X-ray, SEM, TEM, and optical mineralogical results are reported to discuss the paragenesis, age distribution,and origin of clay minerals, silica modifications and authigenic silicates foun...
Silicates versus Sulphur - Searching for Clues about Ionian Vulcanism with Canaricam。
We determined the equation of state (EOS) of three silicate liquid compositions by shock compression of preheated samples up to 127 GPa. Diopside (Di; Ca2Mg2SiO6) at 1773 K, anorthite (An; CaAl2Si2O...
This contribution explores the interaction of the fibrous silicates, palygorskite, sepiolite and chrysotile with a wide range of organic agents. Infrared spectroscopy (IR) methods are essential for th...
Abstract: The structural transformation of dioctahedral 2:1 layer silicates (illite, montmorillonite, glauconite, and celadonite) during a dehydoxylation-rehydroxylation process has been studied by X-...
In this study, the adsorption from solution technique was used for the determination of surface areas of some silicate samples (bentonite, sepiolite, zeolitic tuff and kaolin). Methylene blue (MB), or...
Medical questions surrounding the toxicity of °∞silica°± and other silicon-containing materials i troduced into the body can be answered only through use of microanalytical techniques that provide c...
Changes in configuration and hydrogen bonding are inferred from the complex responses of peak parameters (frequency, width, height, and area) to compression for various hydroxyl groups) depend not on...
Samples collected in low-temperature (2–508 C) waters near hydrothermal vents of the Southern Explorer Ridge, in the northeast Pacific Ocean, contained fine ( ,500 nm) Fe-and Mn-oxide and Fe-silicate ...
Abstract: Hydroxyaluminosilicate (HAS) and hydroxyaluminum (HyA) ionic solutions having final Al concentrations ranging from 3.74 to 4.00 mM; NaOH/Al molar ratios of 1.0, 2.0 and 2.5; and Si/Al molar ...
Within the framework of the Adam-Gibbs (configurational entropy) theory of viscosity,it is shown that for a given composition, the ratio of parameters Be (a temperature inde-pendent constant) to Sc( ...
ThestructuresoffourA MSi O (!nH O)silicates(A NaorK,M NdorY)recently3 6 15 2determinedbytheauthorsarecomparedwithoneanotherandwiththestructuresofrelated silicates.The2:5Si:Oratiointhesecompounds(sili...
ThenewCrcontainingsilicatecompoundsBaCrSi O andSrCrSi O weresynthe-sizedbothfromalkali-borate?uxesandbyhigh-T subsolidussolid-statereactions.Thegillespite-typecrystalstructures(spacegroup P4/ncc,Z 4)w...
Abstract: The formation of layer silicates on capsuled bacterial cell walls was studied in freshwater microbial mats. The trends associated with Al, Si, Mn and Fe deposits with capsules are consistent...
The cation exchange capacities (CEC) and extractable cations in smectite, corrensite and palagonitized glass from hydrothermally-altered pillow lavas and hyaloclastite breccias were measured by both b...

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