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Fibrous-clay mineral formation and soil evolution in Aridisols of northeastern Patagonia, Argentina
Palygorskite Sepiolite Fluorite Soil genesis Calcic and petrocalcic horizons Chubut province of Argentina
2011/11/11
Recent studies of soil–landscape relationships in northeastern Patagonia identified fibrous-clay minerals in calcic and petrocalcic horizons
developed on old fluvio-glacial plains called “Rodados Pat...
MODIFICATION OF FIBROUS SILICATES SURFACES WITH ORGANIC DERIVATIVES – AN INFRARED SPECTROSCOPIC STUDY
FIBROUS SILICATES SURFACES ORGANIC DERIVATIVES
2011/11/7
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...
Relationship between nanostructure and optical absorption in fibrous pink opals from Mexico and Peru
opal optical absorption nanostructure Raman palygorskite TEM
2011/11/11
Translucent pink opals from Mexico (states of Mapimi and Michoacan) and Peru (Acari area, near Arequipa) are opal-
CT, containing from 10 to 40 % palygorskite, as demonstrated by XRD, infrared absorp...
Abstract: The relative growth rates of the three joint chains of silica tetrahedra and metal octahedra in the [100], [110] and [110] directions within the mica layer (referring to the 1M unit-cell) se...
Use of water uptake and capillary suction time measures for evaluation of the anti-diarrhoeic properties of fibrous clays
Palygorskite Sepiolite Anti-diarrhoeic MBA Water uptake CST
2011/11/8
This study explores the use of water sorptionrretention measures as alternative methodologies to the official methylene blue adsorption test for the evaluation of the anti-diarrhoeic properties of som...
Mercury Adsorption by Sulfurized Fibrous Silicates
Activated carbon Adsorption Mercury Palygorskite Pore size distribution Sepiolite Sulfurized silicates
2011/11/30
Abstract: To eliminate mercury vapor from gas streams, three major methods are used: condensation, absorption, and adsorption. This work deals with adsorption, using elemental sulfur as an active phas...