XRF analysis of major and trace elements for wide compositional ranges from silicate rocks to carbonate rocks using low dilution glass beads.

The glass beads of high CaO content samples are not transparent. We therefore developed the method to make clear grass beads by adding a small amount of SiO (cid:50877) powder to the samples. As a result,we could perform precise XRF analyses for wide compositional ranges from silicate to carbonate rocks.