The manuscript “A free, open-source method for automated mapping of quantitative mineralogy from energy-dispersive X-ray spectroscopy scans of rock thin sections” is accepted for publication in Geoscientific Instrumentation, Methods, and Data Systems. Authors: M. Reed, K.L. Ferrier, W. Nachlas, B. Schneider, C. Arson, T. Xu, X. Shen, N. West.