Concept
Serpentine subgroup
Related publications (13)
Diffusion timescale conundrum in contact metamorphism: Oxygen isotope and trace element profiles in dolomite
Anders Meibom, Stéphane Laurent Escrig, Lukas Baumgartner, Florence Bégué
Successful application of diffusion chronometry is based on detailed knowledge of diffusion parameters obtained from laboratory experiments, which also need to be upscaled to be applied to natural samples. While generally applicable, several examples of di ...
PERGAMON-ELSEVIER SCIENCE LTD2023An alternative model for the formation of hydrous Mg/Ni layer silicates ("deweylite"/"garnierite") in faulted peridotites of New Caledonia: II. Petrography and chemistry of white and green clay infillings
This study, which complements a first mineralogical work, presents detailed petrographic and chemical data on the sequences of clay infillings commonly found in serpentine veins of reactivated faults from the New Caledonian peridotite formation. Chemical t ...
E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG2019Anharmonic and Quantum Fluctuations in Molecular Crystals: A First-Principles Study of the Stability of Paracetamol
Michele Ceriotti, Mariana Rossi Carvalho, Piero Gasparotto
Molecular crystals often exist in multiple competing polymorphs, showing significantly different physicochemical properties. Computational crystal structure prediction is key to interpret and guide the search for the most stable or useful form, a real chal ...
2016Mineralisation of CO2 using serpentinite rock - Towards industrial application
In Finland one (and maybe the only) option for large-scale CO2 capture, utilisation and storage (CCUS) seems to be mineralisation, also known as mineral carbonation. Mineral resources in the country should allow for the fixation of quite a few Gt CO2. The ...
Villigen PSI, World Resources Forum, printed by Paul Scherrer Institute2015Deformation mechanisms and rheology of serpentines in experiments and in nature
Microstructures in serpentine samples recovered from deformation experiments performed at high pressure (1-8 GPa), high temperature (150-500 degrees C), and laboratory strain rates (4 10(-4)-10(-6)s(-1)) were studied using transmission electron microscopy ...
Amer Geophysical Union2014A systematic mapping procedure based on the Modified Gaussian Model to characterize magmatic units from olivine/pyroxenes mixtures: Application to the Syrtis Major volcanic shield on Mars
Harold Gabriel Eugène Justin Clenet
Clenet et al. (2011) have developed an adapted version of the Modified Gaussian Model (MGM). The improvements allow the characterization of spectra of olivine-pyroxene(s) mixtures, addressing both modal composition and individual minerals chemical composit ...
Amer Geophysical Union2013Stability of valence alternation pairs across the substoichiometric region at Ge/GeO2 interfaces
Alfredo Pasquarello, Peter Broqvist, Jan Felix Binder
Through hybrid density functional calculations, we compare the Ge-Ge bond energy with the formation energy of a valence alternation pair as the O concentration varies across the Ge/GeO2 interface. First, hole trapping energies are calculated for three atom ...
2012Vibrational spectra of vitreous SiO2 and vitreous GeO2 from first principles
Alfredo Pasquarello, Luigi Giacomazzi
Using a density-functional approach, we calculate the principal vibrational spectra of vitreous SiO2 and vitreous GeO2 and discuss their analogies and differences. For both glasses, we generate model structures consisting of a random network of corner-shar ...
2007H-2-rich fluids from serpentinization: Geochemical and biotic implications
Metamorphic hydration and oxidation of ultramafic rocks produces serpentinites, composed of serpentine group minerals and varying amounts of brucite, magnetite, and/or FeNi alloys. These minerals buffer imetamorphic fluids to extremely reducing conditions ...
2004Petrology and geochemistry of the unbrecciated achondrite Northwest Africa 1240 (NWA 1240): An HED parent body impact melt
NWA 1240 is an unusual eucrite recently recovered in Morocco as a single stone of 98 g. It is an unbrecciated greenish-brown rock nearly devoid of fusion crust. It displays porphyritic texture consisting of skeletal hollow low-Ca pyroxene phenocrysts set i ...
2003