µ-EDXRF based classification of chromites. A quick approach for testing hand specimen and drill cores.

Dieter Rammlmair & Wilhelm Nikonow
Chromites from ophiolites and layered intrusions show a wide variety in Cr#, Mg# and Cr/Fe ratios. These ratios provide information on the genesis of the chromite deposits e.g. the place of formation. By means of µ-EDXRF this information can be obtained in a very quick way from cut hand specimen. Unfortunately, chromites show a number of very intensive diffraction signals due to the polychromatic beam of the µ-EDXRF system, which even after calculating the minimum...
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