| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Saunders, Martin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (33/33 displayed)
- 2024The Synergistic Effect of High Intensity Focused Ultrasound on In-vitro Remineralization of Tooth Enamel by Calcium Phosphate Ion Clusterscitations
- 2023Understanding the effect of microstructural texture on the anisotropic elastic properties of selective laser melted Ti-24Nb-4Zr-8Sncitations
- 2021Cr2O3 in corundumcitations
- 2021Poly(2-hydroxyethyl methacrylate) hydrogels doped with copper nanoparticlescitations
- 2020Kishonite, VH2, and Oreillyite, Cr2N, two new minerals from the corundum xenocrysts of Mt Carmel, Northern Israelcitations
- 2020Dendronised Polymers as Templates for In Situ Quantum Dot Synthesis
- 2019Interrogation of the Effect of Polymorphism of a Metal-Organic Framework Host on the Structure of Embedded Pd Guest Nanoparticlescitations
- 2019Chromium in Corundum: Ultra-high Contents Under Reducing Conditions
- 2018Nanogeochemistry of hydrothermal magnetitecitations
- 2018NiO–ZnO Nanoheterojunction Networks for Room-Temperature Volatile Organic Compounds Sensingcitations
- 2018Carmeltazite, ZrAl2Ti4O11, a new mineral trapped in corundum from volcanic rocks of Mt Carmel, Northern Israelcitations
- 2018Remarkably preserved tephra from the 3430 Ma Strelley Pool Formation, Western Australiacitations
- 2018Generation of amorphous carbon and crystallographic texture during low-temperature subseismic slip in calcite fault gougecitations
- 2017Crystallography of refractory metal nuggets in carbonaceous chondritescitations
- 2017Critical testing of potential cellular structures within microtubes in 145 Ma volcanic glass from the Argo Abyssal Plaincitations
- 2017Crystallography of refractory metal nuggets in carbonaceous chondrites: a transmission Kikuchi diffraction approachcitations
- 2016Preparation and characterization of cerium substituted bismuth dysprosium iron garnets for magneto-optic applicationscitations
- 20163.46 Ga Apex chert ‘microfossils’ reinterpreted as mineral artefacts produced during phyllosilicate exfoliationcitations
- 2015No evidence for intracellular magnetite in putative vertebrate magnetoreceptors identified by magnetic screeningcitations
- 2015Barium titanate nanoparticles for biomarker applicationscitations
- 2014The nano-scale anatomy of a complex carbon-lined microtube in volcanic glass from the ~92Ma Troodos Ophiolite, Cypruscitations
- 2011Microstructural analysis of interfaces in a ferromagnetic- multiferroic epitaxial heterostructurecitations
- 2009Characterization of biominerals in the radula teeth of the chiton, Acanthopleura hirtosacitations
- 2009Elemental ultrastructure of bioleaching bacteria and archaea grown on different energy sourcescitations
- 2009Dietary iron-loaded rat liver haemosiderin and ferritin : in situ measurement of iron core nanoparticle size and cluster structure using anomalous small-angle x-ray scatteringcitations
- 2007Er2O3 as a high-K dielectric candidatecitations
- 2006Structural and Magnetic Properties of Oxidatively Stable Cobalt Nanoparticles Encapsulated in Graphite Shellscitations
- 2006Effect of oxidation on the chemical bonding structure of PECVD SiN thin filmscitations
- 2006Magnesium oxide as a candidate high-k gate dielectriccitations
- 2005ZrO2 film interfaces with Si and SiO2citations
- 2003Study of interface formation of (Ba,Sr)TiO3 thin films grown by rf sputter deposition on bare Si and thermal SiO2/Si substrates
- 2003Magnetite nanoparticle dispersions stabilized with triblock copolymerscitations
- 2002Study of interface formation of (Ba,Sr)TiO3 thin films grown by rf sputter deposition on bare Si and thermal SiO2/Si substrates
Places of action
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article
Cr2O3 in corundum
Abstract
<p>Xenocrysts and xenoliths in Upper Cretaceous pyroclastics on Mount Carmel (northern Israel) represent a series of similar magma-fluid systems at different stages of their evolution, recording a continuous decrease in oxygen fugacity (fO2) as crystallization proceeded. Corundum coexisting with Fe-Mg-Cr-Al spinels, other Fe-Mg-Al-Na oxides, and Fe-Ni alloys in apparent cumulates crystallized at fO2 values near the iron-wüstite (IW) buffer (fO2 = IW±1) and is zoned from high-Cr cores to lower-Cr rims, consistent with fractional crystallization trends. The reconstructed parental melts of the cumulates are Al-Cr-Fe-Mg oxides with ca. 2 wt% SiO2. Corundum in other possible cumulates that contain Cr-Fe (Fe 45 wt%) alloys has low-Cr cores and still lower-Cr rims. Corundum coexisting with Cr0 (fO2 = IW-5) in some possible cumulates has low-Cr cores, but high-Cr rims (to >30% Cr2O3). These changes in zoning patterns reflect the strong decrease in the melting point of Cr2O3, relative to Al2O3, with decreasing fO2. The electron energy loss spectroscopy (EELS) analyses show that all Cr in corundum that coexists with Cr0 is present as Cr3+. This suggests that late in the evolution of these reduced melts, Cr2+ has disproportionated via the reaction 3Cr2+(melt) → 2Cr3+(Crn) + Cr0. The most Cr-rich corundum crystallized together with β-alumina phases including NaAl11O17 (diaoyudaoite) and KAl11O17 (kahlenbergite) and β″-alumina phases; residual melts crystallized a range of (K,Mg)2(Al,Cr)10O17 phases with the kahlenbergite structure. The parental melts of these assemblages appear to have been Al-Cr-K-Na-Mg oxides, which may be related to the Al-Cr-Fe-Mg oxide melts mentioned above, through fractional crystallization or liquid immiscibility. These samples are less reduced (fO2 from IW to IW-5) than the assemblages of the trapped silicate melts in the more abundant xenoliths of corundum aggregates (fO2 = IW-6 to IW-10). They could be considered to represent an earlier stage in the fO2 evolution of an "ideal"Mt. Carmel magmatic system, in which mafic or syenitic magmas were fluxed by mantle-derived CH4+H2 fluids. This is a newly recognized step in the evolution of the Mt. Carmel assemblages and helps to understand element partitioning under highly reducing conditions.</p>