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High-pressure Cr3+ R-line luminescence of zoisite and kyanite: a probe of octahedral site distortion
The Cr 3+ luminescence spectra of zoisite and kyanite, two geologically important minerals, were studied up to 40 and 20 GPa, respectively, in various...
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Magnetic and structure transition of Mn3-xFexO4 solid solutions under high-pressure and high-temperature conditions
Magnetic and structure transitions of Mn 3–x Fe x O 4 solid solutions under extreme conditions are clarified by neutron time-of-flight scattering...
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Influence of octahedral site chemistry on the elastic properties of biotite
Brillouin light scattering spectroscopy was used along with detailed composition information obtained from electron probe microanalysis to study the...
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High-pressure behaviour of stellerite: single-crystal X-ray diffraction study
The high-pressure (H P ) behavior of natural stellerite |Ca 4.00 Na 0.16 (H 2 O) 32 | [Al 8.16 Si 27.84 O 72 ] has been studied by single-crystal X-ray diffraction...
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In situ high-temperature behaviour and breakdown conditions of uvite at room pressure
The thermal behaviour of an uvite from San Piero in Campo (Elba Island, Italy) was investigated at room pressure through in situ high-temperature...
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Explaining the dependence of M-site diffusion in forsterite on silica activity: a density functional theory approach
Experimentally, silica activity (aSiO 2 ) has been shown to have an effect on Mg diffusion in forsterite, but no fully satisfactory mechanism has yet...
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High-pressure crystal structure and equation of state of ferromagnesian jeffbenite: implications for stability in the transition zone and uppermost lower mantle
Jeffbenite, ideally Mg 3 Al 2 Si 3 O 12 , has been identified as inclusions in super-deep diamonds originating from depths that exceed 300 km. Although...
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Crystal–fluid interaction: the evolution of stilbite structure at high pressure
Natural stilbite, Ca 4.00 Na 1.47 (H 2 O) 30 [Al 9.47 Si 26.53 O 72 ], space group F 2/ m , a = 13.5978(3), b = 18.2804(4), c = 17.8076(4) Å, β = 90.685(2)°, V = 4426.18(17) Å...
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The packing fraction of the oxygen sublattice: its impact on the heat of mixing
The heat of mixing of some petrological relevant substitutions (i.e., Mg-Al, Si-Al, Mg-Ti, Mg-Ca, and Mg-Fe) was investigated systematically in...
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2M1 phlogopite–muscovite series minerals at increasing pressure to 9 GPa. I Atomic volumes and compressibilities
Muscovite (Ms) and phlogopite (Phl) series mineral is studied in the 2 M 1 polytype and modeled by the substitution of three Mg 2+ cations in the three...
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Empirical evaluation of the strength and deformation characteristics of natural and synthetic gas hydrate-bearing sediments with different ranges of porosity, hydrate saturation, effective stress, and strain rate
Evaluating the mechanical properties of gas (primarily methane) hydrate-bearing sediments is essential for commercial production as a next-generation...
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Seismic Vulnerability Assessment of Historical Heritage Structures, Analysis and Intervention: Application in Skikda City, Northeast of Algeria
The preservation of historical heritage buildings against natural hazards, especially seismic risk, is extremely challenging. The earthquake is, of...
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Compressibilities along the magnetite–magnesioferrite solid solution
To calculate the thermodynamic properties of recently discovered high-pressure mixed valence iron oxides in the system Fe–Mg–O, information on the...
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A correlation between hydroxyl vibrations under compression and anharmonicity: glaucophane as a test case
The infrared hydroxyl bands and first hydroxyl combination bands of glaucophane are characterized under pressure. In this weakly hydrogen-bonded...
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Trace element partitioning in basaltic systems as a function of oxygen fugacity
Along with temperature, pressure and melt chemistry, magmatic oxygen fugacity ( f O 2 ) has an important influence on liquid and solid differentiation...
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Effectiveness of Ti-in-amphibole thermometry and performance of different thermometers across lower continental crust up to UHT metamorphism
Metabasites are important constituents of deep crustal sections and are the favored rock type for studying lower crustal amphibolite to granulite...
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Predicting the impacts of climate change on the potential distribution pattern of endangered Himalayan natives (Ulmus wallichiana and U. villosa) in Pakistan
Climate change negatively affects living biota and environment, particularly for those of restricted ecology and distribution range. Here, we applied...
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Distribution of Sc3+ at the octahedral sites and its effect on the crystal structure of synthetic Sc-bearing clinozoisite on the Ca2Al3Si3O12(OH)-Ca2Al2ScSi3O12(OH) join
Synthetic Sc-bearing clinozoisite on the Ca 2 Al 3 Si 3 O 12 (OH)-Ca 2 Al 2 Sc 3+ Si 3 O 12 (OH) join was studied by single-crystal X-ray diffraction to understand...
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Evaluation of the Effectiveness and Impact of Wetting the Surface of the Collector Grid on the Process of Collecting Atmospheric Fog
AbstractFog collectors can be an efficient source of fresh water in areas with constant air advection. One key feature of any collection device is...
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The flexibility of the T–X–T hinges between the coordination tetrahedra in various zeolitic frameworks: an empirical structural study
In recent years, a large number of precisely determined crystal structure determinations of zeolites, that is compounds based on open frameworks of...
