Results 61 to 70 of about 4,611 (176)
Illite From Muloorina, South Australia
Abstract Illite from Muloorina, just south of Lake Eyre in South Australia, is commonly used as a standard ferric iron-bearing illite which has a cation exchange capacity (CEC) of ~22 meq/100 g, too high a value for this clay to conform to the most recent conclusions about illite composition.
Eggleton, Richard, Fitz Gerald, John
openaire +4 more sources
Abstract Salt's inherent weakness and capacity for ductile deformation create significant mechanical contrasts that locally perturb the stress field in surrounding rocks, often leading to deviations from regional tectonic stresses. Variations in local stress are a critical factor for wellbore stability, seal integrity, and fluid flow in subsurface ...
Lauren J. Reeher +3 more
wiley +1 more source
The synthesis of faujasite type zeolite from an illite-rich raw material by an alkaline fusion step prior to hydrothermal treatment was investigated. The synthesis products were characterized by X-ray fluorescence, X-ray diffraction, scanning electron ...
Víctor Darío Contreras Niño +3 more
doaj
Os solos hidromórficos, comuns na Amazônia e no Pantanal, estão sujeitos à alternância natural de períodos de alagamento e secamento, que conduzem a uma formação e características diferenciadas.
Elaine de Arruda Oliveira Coringa +3 more
doaj +1 more source
Comparative study of illite clay and illite-based geopolymer products
Quaternary (Q-clay) clayey deposits are one of the dominating parts of mineral raw materials of the sedimentary cover at present area of Latvia. These clays can be characterised by illite content up to 75-80 %. Two ways for use of illite clays were studied: conventional and geopolymers method.
I Sperberga +4 more
openaire +1 more source
Impact Reactivation of a Hydrothermal System in Basalt in the Vargeão Dome Impact Structure, Brazil
Abstract As hydrous minerals have been observed in impact craters on Mars, impact‐generated hydrothermal systems (IGHSs) have been considered as potential habitats for life on that planet. The Vargeão Dome, a 12 km wide impact structure in southern Brazil, was formed in basalts with at least two hydrothermal alteration stages.
Jitse Alsemgeest +5 more
wiley +1 more source
THERMOMECHANICAL ANALYSIS OF ILLITE FROM FÜZÉRRADVÁNY
Young’s modulus of green illite from Füzérradvány (Hungary) was measured in-situ in the temperature interval 20 °C – 1100 °C and auxiliary analyses DTA, TG and TDA, XRD and EGA, were also performed.
Tomáš Húlan +5 more
doaj +1 more source
Abstract The incompatible behavior of Lithium during magmatic differentiation and high mobility during aqueous alteration make it a valuable tracer of crustal processes on Mars. Its preferential incorporation into secondary phyllosilicates further links Li to clay‐forming environments, which are critical for evaluating past aqueous activity and ...
K. W. Nikolajsen +12 more
wiley +1 more source
Soil Organic Matter Stabilization by Polyvalent Cations in a Buried Alkaline Soil
Abstract Buried paleosols can store large quantities of organic carbon (C), much of which persists for millennia due to isolation from surface processes that promote decomposition. Subsoil organic matter (SOM) persistence is often enhanced by mineral associations and ionic conditions—particularly high clay content and polyvalent cations—that limit ...
Manisha Dolui +11 more
wiley +1 more source
Sequences of thick and eroded soils in hills surfaces are cultivated with banana since the beginning of the last century in the Northeast of Pernambuco (PE), Brazil.
Maria da Conceição de Almeida +3 more
doaj +1 more source

