Clay minerals
Chemistry and mineralogy of clay minerals in Asian and Saharan dusts and the implications for iron supply to the oceans
... Nano-thin clay mineral platelets displaying 10 Å lattice fringes were the major form of the clay minerals in the Asian ...series clay minerals (ISCMs) which are ...
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CLAY MINERALS AND GAMMA-RAY SPECTROMETRY AS PALEOCLIMATIC INDICATORS IN THE GONDWANA’S SEDIMENTARY SEQUENCES, SANTA CATARINA, BRAZIL
... presents clay minerals data and gamma spectrometry to accesses the paleoclimatic signature during the depositional transition from Taciba to the Rio Bonito Formation in the eastern edge of the Paraná ...
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Thermal Analysis: A Complementary Method to Study the Shurijeh Clay Minerals
... highest clay content (mostly illite), consequently the highest absorbed water on the surface of clay minerals, and the highest pore ...of clay minerals, ...
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Adsorption of methylene blue on clay minerals particles: analysis of the clay particle sizes.
... ON CLAY MINERALS PARTICLES: ANALYSIS OF THE CLAY PARTICLE ...with clay particles in aqueous suspension have been extensively ...the clay modiies signiicantly the particle sizes ...
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METODOLOGY FOR LATERÍTICS CU-BEARING CLAY MINERALS CHARACTERIZATION
... of clay minerals associated to the ores is the main reason of this low figure, especially because clay minerals are very complex, most of the time, impossible to ...the clay mineral ...
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Sorption study of herbicides with the clay minerals vermiculite and montmorillonite.
... Em todos os sinais obtidos por FIA-UV, foram constatadas diiculdades na quantiicação do herbicida, uma vez que as provas em branco exibiram sinais relativamente elevados[r] ...
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Braz. J. Geol. vol.46 número3
... and clay minerals have high relectance and, conversely, the chlorophyll of the green vegetation absorbs strongly radiation at the red wavelengths (band ...
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Cerâmica vol.63 número366
... high clay fraction (above 80 wt%) composed of illite, kaolinite and quartz ...the clay samples, while traces of montmorillonite were observed in the other ...techniques, clay minerals, natural ...
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ALUMINUM HYDROXY-INTERLAYERED MINERALS AND CHEMICAL PROPERTIES OF A SUBTROPICAL BRAZILIAN OXISOL UNDER NO-TILLAGE AND CONVENTIONAL TILLAGE
... 2:1 clay minerals in no-tilled ...the clay fraction of soil under conventional tillage (a) and no- tillage (b) after treatment with sodium ...
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Braz. J. Geol. vol.47 número3
... mon clay minerals associated with pedogenic palygorskite are smectite, illite, and interstratiied minerals (Singer ...clays minerals in this ...
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Mineralogy of the Clay Fraction and Chemical Properties of Soils Developed from Sedimentary Lithologies of Pirambóia, Sanga-the-Cabral and Guará Geological Formations in Southern Brazil
... the clay fraction is similar (Figure ...layer minerals have strong intercalation with interlayered hydroxy-Al polymers ...1:1-2:1 clay minerals, possibly due to destruction of some of the ...
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Feldspar minerals as efficient deposition ice nuclei
... to clay minerals, mineral dusts from Asia, Africa, and Arizona can be composed of other minor minerals which include varying amounts of feldspars, ...
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Feldspar minerals as efficient deposition ice nuclei
... feldspar minerals are the most ac- tive natural minerals studied, rivalling the anthropogenic ma- terial lead iodide, which has a good crystallographic match with ice (Schaefer, 1954; Vonnegut, ...three ...
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FORMS AND ACCUMULATION OF COPPER AND ZINC IN A SANDY TYPIC HAPLUDALF SOIL AFTER LONG-TERM APPLICATION OF PIG SLURRY AND DEEP LITTER
... to clay minerals, with the lowest percentages linked to the exchangeable fraction and in solution (Figure ...to clay minerals, which was lower than the percentage linked to the organic ...
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Contribuição de formas não-trocáveis de potássio para seu acúmulo em plantas de milho
... Potassium (K) is the second most required element by the majority of the cultivated plants; its absorption by plants triggers a continuous process of depletion of the different forms of K, which is more pronounced when ...
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Alteration and Lithogeochemistry of Altered Rocks at Well KMJ-49 Kamojang Geothermal Field, West Java, Indonesia
... Opaque minerals are present around 5%, as an individual mineral, sometimes in groups and some inclusion ...opaque minerals present with ...opaque minerals showing intergranular and intersertal ...
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J. Braz. Chem. Soc. vol.8 número6
... In this work we have demonstrated that 29 Si MAS- NMR and 27 Al MAS-NMR combined with XRD and DTA is a powerful method for the study of different fractions of clay minerals. Qualitative XRD measurements ...
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Clay Mineralogy of Brazilian Oxisols with Shrinkage Properties
... total clay fraction, high quantities of 2:1 clay minerals were observed, interpreted as HIS, ranging from 13 to 36 %, with an average value of 22 ...the clay fractions individually, the ...
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Matéria (Rio J.) vol.21 número1
... of clay minerals in the areas of Materials Science and Engineering has received notable attention for its use in carrying of ...of clay, and fibrous tubes have been used in the preparation of ...
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Hydration-Induced Local Molecular Structures in Nano-Layered Clay Particles
... Positronium (Ps) annihilation spectroscopy and thermogravimetry and differential thermal analysis (TG-DTA) were conducted for synthetic smectite clay minerals to investigate local molecular structures i n- ...
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