Abstract

Electron probe microanalyzer is a powerful tool to quantitatively investigate the spatial distribution of chemical composition of minerals in rocks, which directly contributes to understanding of the rock-forming processes. On the other hand, a difficulty lies in determination of analyzing locations due to a requirement of deep knowledge and experience in petrological studies. In order to minimize the difficulty, this study developed a Python program that converts compositional maps to a phase distribution map and displays coordinates which provide representative chemical compositions of each phase based on the K-means clustering.