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View article: GeAl<sub>2‐2x</sub>Fe<sub>2x</sub>O<sub>3</sub>(OH)<sub>4</sub> Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction
GeAl<sub>2‐2x</sub>Fe<sub>2x</sub>O<sub>3</sub>(OH)<sub>4</sub> Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction Open
Ge‐imogolite nanotubes (Ge‐INT) are analogs of natural clay nanotubes formed in volcanic soils that attract growing interest. Despite their amazing structural properties, their use in water oxidation has not been reported yet. In this work…
View article: Quantitative nanoscale mapping of the Mn redox states in silicates by scanning transmission X-ray microscopy at the Mn L2,3-edges
Quantitative nanoscale mapping of the Mn redox states in silicates by scanning transmission X-ray microscopy at the Mn L2,3-edges Open
We present a novel analytical protocol for quantifying and mapping Mn oxidation states in silicates at the nanoscale. Based on X-ray Absorption Near Edge Structure spectra of the Mn L2,3-edges (630–660 eV) acquired thanks to a Scanning tra…
View article: Editorial for the Special Issue of Minerals, “Advances in Low-Temperature Mineralogy and Geochemistry”
Editorial for the Special Issue of Minerals, “Advances in Low-Temperature Mineralogy and Geochemistry” Open
Low-temperature geochemical processes are ubiquitous in geological areas related to weathering, diagenesis, very low-grade metamorphism, and post-magmatic processes, and provide an explanation of the P–T–X history of the Earth’s crust [...]
View article: Geological significance of early cements: insight from laboratory simulated diagenesis
Geological significance of early cements: insight from laboratory simulated diagenesis Open
Little is known about the evolution of petrophysical properties (porosity, permeability, mechanical resistance) associated with the growth of microstructures produced during the early stages of diagenesis. To gain a better understanding of…
View article: Nonclassical Growth Mechanism of Double‐Walled Metal‐Oxide Nanotubes Implying Transient Single‐Walled Structures
Nonclassical Growth Mechanism of Double‐Walled Metal‐Oxide Nanotubes Implying Transient Single‐Walled Structures Open
The formation of imogolite nanotubes is reported to be a kinetic process involving intermediate roof‐tile nanostructures. Here, the structural evolution occurring during the synthesis of aluminogermanate double‐walled imogolite nanotubes i…
View article: Kaolinite-to-Chlorite Conversion from Si,Al-Rich Fluid-Origin Veins/Fe-Rich Carboniferous Shale Interaction
Kaolinite-to-Chlorite Conversion from Si,Al-Rich Fluid-Origin Veins/Fe-Rich Carboniferous Shale Interaction Open
The kaolinite-to-chlorite conversion is one of the chloritization processes that occurs in low temperature diagenetic and hydrothermal systems. The mechanism of this mineralogical transformation is still under discussion, since direct tran…
View article: From static alteration to mylonitization: a nano- to micrometric study of chloritization in granitoids with implications for equilibrium and fluid percolation length scales
From static alteration to mylonitization: a nano- to micrometric study of chloritization in granitoids with implications for equilibrium and fluid percolation length scales Open
<p>Strain accommodation in upper crustal rocks is often accompanied by fluid-mediated crystallization of phyllosilicates, which influence rock strength and shear zone formation. The composition of these phyllosilicates is commonly us…
View article: Low-Temperature Chlorite Geothermometry and Related Recent Analytical Advances: A Review
Low-Temperature Chlorite Geothermometry and Related Recent Analytical Advances: A Review Open
Chlorite, a 2:1:1 phyllosilicate, has all the required attributes to form the basis of a geothermometer: this mineral is ubiquitous in metamorphic, diagenetic, and hydrothermal systems with a broad field of stability and a chemical composi…
View article: Fluid Circulation Along an Oceanic Detachment Fault: Insights From Fluid Inclusions in Silicified Brecciated Fault Rocks (Mid‐Atlantic Ridge at 13°20′N)
Fluid Circulation Along an Oceanic Detachment Fault: Insights From Fluid Inclusions in Silicified Brecciated Fault Rocks (Mid‐Atlantic Ridge at 13°20′N) Open
The MAR 13°20′N corrugated detachment fault is composed of pervasively silicified mafic cataclastic breccias, instead of ultramafics and gabbros commonly found at other detachments. These breccias record overplating of hangingwall diabases…
View article: Deciphering the metamorphic evolution of the Pulo do Lobo metasedimentary domain (SW Iberian Variscides)
Deciphering the metamorphic evolution of the Pulo do Lobo metasedimentary domain (SW Iberian Variscides) Open
The Pulo do Lobo domain is one of the units exposed within the orogenic suture zone between the Ossa-Morena and the South Portuguese zones in the SW Iberian Variscides. This metasedimentary unit has been classically interpreted as a Rheic …
View article: Deciphering the metamorphic evolution of the Pulo do Lobo metasedimentary belt (SW Iberian Variscides)
Deciphering the metamorphic evolution of the Pulo do Lobo metasedimentary belt (SW Iberian Variscides) Open
The Pulo do Lobo belt is one of the units related to the orogenic suture between the Ossa-Morena and the South Portuguese zones in the SW Iberian Variscides. This metasedimentary unit has been classically interpreted as a Rheic subduction-…
View article: Experimental Study of Pyrite Oxidation at 100 °C: Implications for Deep Geological Radwaste Repository in Claystone
Experimental Study of Pyrite Oxidation at 100 °C: Implications for Deep Geological Radwaste Repository in Claystone Open
The oxidation of pyrite is one of the near field processes of the chemical evolution of clay rock planned to host a deep geological radioactive waste repository during operation. Indeed, this process can lead to transitory acidic condition…
View article: Contrasting degrees of recrystallization of carbonaceous material in the Nelson aureole, British Columbia and Ballachulish aureole, Scotland, with implications for thermometry based on Raman spectroscopy of carbonaceous material
Contrasting degrees of recrystallization of carbonaceous material in the Nelson aureole, British Columbia and Ballachulish aureole, Scotland, with implications for thermometry based on Raman spectroscopy of carbonaceous material Open
The degree of recrystallization of carbonaceous material ( CM ), as monitored by Raman microspectroscopy, was examined as a function of metamorphic grade in two well‐studied contact aureoles containing carbonaceous pelites: the Nelson aure…
View article: Water-rock interactions in carbonaceous chondrites: a meso to nanoscale study of alteration processes in an anoxygenic environment
Water-rock interactions in carbonaceous chondrites: a meso to nanoscale study of alteration processes in an anoxygenic environment Open
Natural diamonds and their mineral inclusions play a crucial role in Earth Sciences as they could be considered as open windows to the deep Earth.Indeed, they are thought to crystallize between about 120 and 1000 km depth.Diamonds formed b…