soil productivity is generally associated with poor nutrient status and the physical condition of the soil, but the effect of soil mineralogy on soil productivity has received little attention. in this qualitative study, interactions between mineralogy and physico-chemistry and their role on the productivity of two luvisols, an arenosol and a vertisol are investigated. minerals identified in th...

In this paper, we expand upon our previous research on unsupervised learning algorithms to map the spectral parameters of Martian surface. Previously, focused VIS-NIR range hyperspectral data from CRISM imaging spectrometer instrument onboard NASA’s Mars Reconnaissance Orbiter relate other correspondent imager sources. study, generate cluster maps a selected datacube in NIR 1050–2550 nm. This i...

In this study, to better understand the factors controlling concentration and isotope composition of lithium (Li) in ocean, we investigated behaviour Li during interaction kaolinite with artificial seawater. Dissolution Li-free seawater at acidic conditions (exp. 1) results a strong preferential release light isotopes, ?7Liaq-kaol ? ?19‰, likely reflecting both breaking 6LiO bonds over 7LiO fro...

The Neogene-Paleogene glauconite sands are investigated in the framework of Belgian radioactive waste disposal as material for an additional sorption sink. Glauconite is Fe-rich phyllosilicate that mainly present 125–250 ?m sized pellets sand. Recent studies have shown a surprisingly strong radiocaesium (137Cs) on these sands, despite coarse pellet structure. This study was set up to characteri...

An aluminous montmorillonite has been synthesized at hydrothermal conditions (623 K, 120 MPa) and compared to the natural Na-exchanged Wyoming montmorillonite (Na-SWy2). The synthetic product is characterized by a high cation exchange capacity (83 meq/100g) and ethylene glycol specific surface area (764 m 2 /g) similar to Na-SWy2 but with a higher purity with one crystalline phase. Compacted sm...