Results 11 to 20 of about 127 (124)
The effect of sonication on dioctahedral and trioctahedral micas
Ultrasonics Sonochemistry, 2006 This paper reports on the effect of sonication on two mica samples. The materials have been investigated in terms of structure modifications, particle size and morphology, specific surface area and thermogravimetric behaviour. The effect of the mica structure, namely density and distribution of cations over the octahedral sites, on the sonicated ...
J L, Pérez-Rodríguez +3 more
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Мінеральні ресурси України, 2019 Results of complex research of different age ancient weathering crusts in various rocks (terrigenous-carbonate rocks of Lower Paleozoic, dolerites, tuffs and tufogene formations, kimberlites) within the main diamondiferous regions of the Siberian ...
M. M. Zinchuk
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Scientific Reports, 2022 Petrology and timing of magmatic-hydrothermal systems and the linkage between plutonic and volcanic domains are central topics in geosciences, because of broad implications for natural hazards and exploitation of natural resources. We investigated by the
Gianfranco Di Vincenzo +3 more
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Composition of Smectite from Maastrichtian Sediment of the Afikpo Basin, southeast Nigeria
Journal of Applied Sciences and Environmental Management, 2019 The sand, silt, shale and clay fractions soils derived from Maastrichtian sediments in the Afikpo Basin, southeastern Nigeria exhibit unusually high cation-exchange capacities. Smectite was identified by X-ray diffraction in all sample fractions and was
A.N. Agibe +3 more
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Hydration of Na-saturated synthetic stevensite, a peculiar trioctahedral smectite [PDF]
Clay Minerals, 2020 AbstractSmectite interlayer water plays a key role in the mobility of elements and molecules and affects a variety of geological processes. In trioctahedral smectites, in contrast to saponite and hectorite, the layer charge of which originates from isomorphic substitutions, the stevensite layer charge originates from the presence of octahedral ...
Vinci, Doriana +4 more
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Бюллетень Почвенного института им. В.В. Докучаева, 2010 The distribution of clay minerals of the fraction less than 1 micron, extracted from typical, alkaline, podzolized agronomic black earths, depends on the type of soil, lithology of soil-forming rocks and relief.
N. Chizhikova +2 more
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Geothermal Energy, 2017 A submarine hydrothermal fluid discharge structure in Akureyri Bay, Eyjafjörður region, Iceland, was investigated by means of structural, geochemical, and mineralogical methods.
Richard Stanulla +4 more
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Alteration of podzolized tills by acid load near Ni-Cu smelters at Monchegorsk, Kola Peninsula, Russia [PDF]
Bulletin of the Geological Society of Finland, 1994 Mineralogy and geochemistry of podzolized tills was studied in the area of dieback forest near the Ni-Cu smelters at Monchegorsk, and less extensively forest damage near by Apatity and Kirovsk in the Russian Kola Peninsula.
M.L. Räisänen, E. Pulkkinen, M. Kontio
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Near Infrared Spectroscopic Study of Trioctahedral Chlorites and Its Remote Sensing Application
Open Geosciences, 2019 The mineral chemistry of thirteen trioctahedral chlorite samples from four regions in northwestern China, having a wide range of Fe and Mg contents and relatively constant Al and Si contents, were studied via raman spectroscopy, near infrared (NIR ...
Yang Min +7 more
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The composition of metapelitic biotite, white mica, and chlorite: a review with implications for solid-solution models [PDF]
European Journal of MineralogyBiotite, white mica, and chlorite record petrological processes and pressure–temperature conditions. Unfortunately, their crystal chemistry is complicated and thermodynamic modelling of their phase relations is hindered by this complexity.
B. Dubacq, J. B. Forshaw
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