A method for applying matrix corrections to X-ray intensity maps using the Bence±Albee algorithm and Matlab
نویسندگان
چکیده
Matlab scripts that apply the Bence & Albee (1968) matrix correction algorithm to X-ray intensity data collected as element maps on a Cameca SX-50 microprobe are used to produce two-dimensional maps of oxide weight percent and cation proportions for SiO2, Al2O3, FeO, MnO, MgO, CaO, Na2O and K2O. Once generated, large data sets of mapped oxide weight percent values or cation numbers that retain spatial information can be used petrologically. The technique is used to evaluate the compositional range of barroisitic amphibole in an eclogite from New Caledonia, to examine aspects of equilibration during the partial hydration of the eclogite facies mineral assemblage.
منابع مشابه
Bence A E & Albee A L. Empirical correction factors for the electron raicroanalysis of silicates and oxides. J. Geol. 76:382-403. 1968
The empirically observed linear relationship between relative x-ray intensity and relative concentration is the basis for a simplified approach to electron microprobe data reduction which is compatible with computer control of the x-ray spectrometers. Elementoxide matrix effects, predetermined using empirical and theoretical techniques, are concentration weighted in a polycomponent phase analys...
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