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Constraints on the evolutionary history of aluminous mafic rocks in the Ronda peridotite massif (Spain) from trace-element compositions of clinopyroxene and garnet
trace-element clinopyroxene garnet eclogite Ronda granulite
2017/8/9
Multiple trace-element compositions of clinopyroxene and garnet in aluminous mafic layers (±corundum and/or sapphirine) alternating with peridotites from the Ronda massif, Spain, were determined by an...
Al, Si, and Mg occupancies in tetrahedrally and octahedrally coordinated sites in synthetic aluminous tremolite
Al Si Mg occupancies tetrahedrally octahedrally coordinated sites synthetic aluminous tremolite
2012/4/5
Aseriesofaluminoustremoliteswassynthesizedat800¤C85Cand6¤C13kbaralonthejoinCa
Mg Si O (OH) -Ca (Mg Al)(AlSi )O (OH) bymeansoftheMg-Tscher-
makssubstitution.Althoughtheamphiboleyieldswerehigh(97¤C99w...
An Improved Model for Structural Transformations of Heat-Treated Aluminous Dioctahedral 2:1 Layer Silicates
Beidelites Cis-vacant octahedra Dehydroxylation Illites Montmorillonites Trans-vacant octahedra
2011/12/28
An improved model for the interpretation of thermal effects during dehydroxylation in aluminous dioctahedral 2:1 layer phyllosilicates considers trans-vacant (tv) and cis-vacant (cv) 2:1 layers and le...
Dehydroxylation of Aluminous Goethite: Unit Cell Dimensions, Crystal Size and Surface Area
Al-substitution Crystal size Dehydroxylation Goethite Hematite Specific surface area Unit cell
2011/12/27
This work investigates unit cell dimensions, crystal size and specific surface area of aluminous goethite that was progressively dehydroxylated to form hematite. Goethite synthesized from the ferrous ...
hk-Ordering in Aluminous Nontronite and Saponite Synthesized Near 90°C: Effects of Synthesis Conditions on Nontronite Composition and Ordering
Beidellite Electron diffraction High-resolution electron microscopy hk-order Lattice imaging Layer stacking Nontronite Nontronite synthesis Saponite
2011/12/28
In studies on the fate of aluminium in the environment, nontronite and saponite have been obtained by synthesis in reducing alkaline conditions close to those prevailing in poorly drained soils develo...
Compositional End Members and Thermodynamic Components of Illite and Dioctahedral Aluminous Smectite Solid Solutions
Clay minerals Composition End members Illite I/S clays Mixed-layered clays Smectite Stoichiometry Structural formula Thermodynamic components Thermodynamic status
2011/12/30
Consideration of XRD, TEM, AEM, and analytical data reported in the literature indicates that dioctahedral aluminous smectite and illite form two separate solid solutions that differ chemically from o...
Fourier Transform Infrared Studies of Aluminous Goethites and Hematites
Aluminum Fourier transform Goethite Hematite Infrared
2012/2/7
Synthetic aluminous hematites and goethites have been examined by Fourier-transform infrared spectroscopy. For aluminous hematites prepared at 950°C a linear relationship exists between Al content and...
Cation-Exchange Reactions of Siliceous and Aluminous Phillipsites
Cation exchange Cation selectivity Chemical composition Phillipsite Zeolite
2012/2/8
Exchange isotherms for the pairs Na-K and Na-Ca were measured by use of 0.1 N solutions at 5°, 35°, and 70°C in phillipsite from Tecopa, California (3.63 Al/32 oxygen unit cell), and Oki Islands, Shim...
Synthesis and Properties of Poorly Crystalline Hydrated Aluminous Goethites
Aluminum Diaspore Goethite Infrared Synthesis Vegard's law X-ray powder diffraction
2012/2/8
Al-substituted goethites were prepared by rapid oxidation of mixed FeCl2-AlCl3 solutions at pH 6.8 in the presence of CO2 at 25亱C. A combination of Al substitution and adsorption of CO2 reduced crysta...
Lithium and Potassium Absorption, Dehydroxylation Temperature, and Structural Water Content of Aluminous Smectites
Lithium Potassium Absorption Dehydroxylation Temperature Aluminous
2012/2/20
X-ray analysis of Li+- and K+-saturated samples, differential thermal analysis (DTA), thermal gravimetric analysis (TGA), and chemical analysis of 83 samples enable a distinction to be made between Wy...