Intermediate orthopyroxenes show a X-ray absorption Fe K-edge with two crest of different width and height which can be fitted by two Lorentzian lines. The relative areas of these are proportional to the Fe2+ content of the M2 and M1 sites determined by Moessbauer spectroscopy. Thus XANES spectroscopy provides a new quantitative method of determining the Fe-Mg intersite distribution in the orthopyroxene series and may in future contribute to geospeedometry.
Determining Mg-Fe Intersite distribution in natural and heated orthopyroxenes by Synchrotron X-ray Absorption spectroscopy
PARIS, Eleonora;
1991-01-01
Abstract
Intermediate orthopyroxenes show a X-ray absorption Fe K-edge with two crest of different width and height which can be fitted by two Lorentzian lines. The relative areas of these are proportional to the Fe2+ content of the M2 and M1 sites determined by Moessbauer spectroscopy. Thus XANES spectroscopy provides a new quantitative method of determining the Fe-Mg intersite distribution in the orthopyroxene series and may in future contribute to geospeedometry.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
