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Structural Fe3+ in Natural Kaolinites: New Insights from Electron Paramagnetic Resonance Spectra Fitting at X and Q-Band Frequencies
Dickite Disorder EPR Fe3+ Kaolinite
2011/12/7
Abstract: Structural Fe3+ in kaolinites and dickites covering a broad range of disorder was investigated using electron paramagnetic resonance (EPR) spectroscopy at both the X and Q-band frequencies. ...
Comparison of conventional and garnet-aluminosilicate-quartz O isotope thermometry: Insights for mineral equilibration in metamorphic rocks
Comparison of conventional garnet-aluminosilicate-quartz O mineral equilibration metamorphic rocks
2012/4/1
Oxygen isotope thermometry based on fractionations among quartz, garnet, kyanite, silliman-
ite, and potassium feldspar in amphibolite to granulite facies schists and gneisses was compared to
thermo...
New insights into organic-mineral particles: composition, properties and models of molecular structure
Analytical pyrolysis Computational chemistry Molecular modelling Soil organic-mineral particles Xenobiotic complexes
2011/11/8
Organic-mineral soil particles are formed and altered as a result of pedogenic processes and anthropogenic impacts on soils. They can be isolated from
bulk soil samples by physical disaggregation fol...
Diogenites as asteroidal cumulates: Insights from spinel chemistry
asteroidal cumulates spinel chemistry orthopyroxene
2012/3/31
The chemical composition of spinel was determined for a suite of 19 diogenites (orthopyroxenites)
thought to be from asteroid 4 Vesta. Previous studies (Fowler et al. 1994, 1995) of orthopyroxene
de...
Oriented attachment and growth, twinning, polytypism, and formation of metastable phases: Insights from nanocrystalline TiO2
Oriented attachment growth twinning polytypism formation of metastable phases Insights nanocrystalline TiO2
2012/4/1
Atomic-resolution transmission electron micrographs show that nanocrystalline TiO2 coarsens by oriented attachment and growth under hydrothermal conditions. In addition to forming homogeneous single c...
High-temperature Raman spectroscopic and X-ray diffraction study of β-Mg2SiO4: Insights into its high-temperature thermodynamic properties and the β to α phase-transformation mechanism and kinetics
High-temperature Raman spectroscopic X-ray diffraction study β-Mg2SiO4 Insights high-temperature thermodynamic properties the β to α phase-transformation mechanism kinetics
2012/4/5
Weperformed in-situ Raman spectroscopy and X-ray diffraction experiments at high temperature and ambient pressure to investigate the intrinsic anharmonic properties of {J-Mg2Si04and the mechanism and ...
Fe ordering in kaolinite: Insights from 29Si and 27Al MAS NMR spectroscopy
Fe ordering kaolinite Insights 29Si 27Al MAS NMR spectroscopy
2012/4/5
Kaolinite-richsamples wereselectedfor 27 Aland 29SiMASNMRstudy to explore the effectofFeontheir spectraandprovide insight into the nature ofFeorderingin kaolinite. Initial characterization bychemicala...