Papers by Sigrid Eeckhout
Mineralogy and Petrology, 2001
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Physics and Chemistry of Minerals, 1999
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Physics and Chemistry of Minerals, 1998
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American Mineralogist, 2007
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Hyperfine Interactions, 2003
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The Journal of Gemmology, 2004
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An experimental and theoretical study of the K absorption pre-edge in hematite (α-Fe2O3) is prese... more An experimental and theoretical study of the K absorption pre-edge in hematite (α-Fe2O3) is presented. Resonant inelastic X-ray scattering with a 3p hole in the final states was used to obtain spin-selective absorption spectra. Spectral variations with changing the orientation of the incident X-ray polarization vector with respect to the crystal c-axis in single crystalline hematite are discussed. The experimental results can be successfully modeled using a band-structure approach (WIEN2k with LDA+U). A pre-edge absorption feature is assigned to unoccupied p electronic states due to Fe-Fe interactions, i.e. they are due to non-local transitions.
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American Mineralogist
Electron-microprobe analyses (EMPA) and Mössbauer spectra (MS) have been acquired for natural tou... more Electron-microprobe analyses (EMPA) and Mössbauer spectra (MS) have been acquired for natural tourmalines sampled near Crummock Water and Haweswater, English Lake District. In the former, the dravite-schorl series is prevalent, whereas in the latter, the dravite ...
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American Mineralogist
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Phys Chem Miner, 2003
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Hyperfine Interactions, 2003
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Brazilian Journal of Geology, 2003
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American Mineralogist, Mar 29, 2002
... The Passagem de Mariana gold mine is located less than 10 km to the southeast, between the ba... more ... The Passagem de Mariana gold mine is located less than 10 km to the southeast, between the base of the Minas ... hydrothermal alteration of quartz-biotite schists with mineral replacements occurring after the regional metamorphic peak (Chauvet and Menezes 1992; Menezes ...
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American Mineralogist, Oct 1, 2002
Mössbauer spectra (MS) at room temperature (RT) and Fourier-transform infrared (FTIR) spectra in ... more Mössbauer spectra (MS) at room temperature (RT) and Fourier-transform infrared (FTIR) spectra in the OH stretching region were acquired for natural spessartine-almandine garnet samples from different Brazilian pegmatites, including the complex, zoned Alto Mirador pegmatite, ...
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Papers by Sigrid Eeckhout