Abstract The rising energy demands worldwide and difficulty in developing novel clean sources have greatly stimulated the exploitation of coalbed methane. Clay minerals are common fractions coal; thus, understanding their CH 4 adsorption capacities pore structures is vital. In this study, coal, parting, roof, floor samples were collected from Yangquan Mining District. mineral compositions, capa...

Samples of The Miraflores Basalt sub-volcanic rocks (Miocene Late Formation) collected from different quarries on the Isthmus Panama and several samples excavation third set locks in New Channel were characterised this study. All studied had similar petrological mineralogical characteristics; however, substantially degrees alteration, which varied NW–SE direction. most altered areas located at ...

Mudstone samples from the Moreno (Upper Cretaceous-Paleocene) and Kreyenhagen (Eocene) formations are analysed using X-ray diffraction (XRD) fluorescence (XRF) to determine their mineralogy. Smectite (Reichweite R0) is predominant phyllosilicate present, 48% 71.7% bulk rock mineralogy (excluding carbonate cemented highly bio siliceous samples) 70% 98% of <2 μm clay fraction. Opal CT less so ...

Full title of the article INTERACTIONS OF AMMONIUM SMECTITE WITH LOW MOLECULAR WEIGHT CARBOXYLIC ACIDS Shortened title NH4-CLAY-CARBOXYLIC ACIDS INTERACTION Authors M. GAUTIER, F. MULLER, J.-M. BENY, L. LE FORESTIER, P. ALBERIC, P. BAILLIF Address CNRS/INSU, Institut des Sciences de la Terre d’Orléans (ISTO), Université d’Orléans-Université de Tours, 1A rue de la Férollerie, 45071 Orléans Cedex...

Glaucony is a significant green marine facies in the northwestern passive margin of Guadalquivir Basin (Spain), where glauconite formed authigenically on sediment-starved continental shelf, with fecal pellets and benthic foraminiferal tests being main glauconitized substrates. Results from study using XRD, TGA-DSC, SEM-EDS, EPMA have revealed that remarkably heterogeneous mineral composition ch...