Fig. 5

Chemical phase output from multivariate statistical analysis of EDS stage scan data set. A Composite overlay of six component images that represent quartz (red), clear glass (green), Ca feldspar + dark glass (blue), dark glass (dark cyan), Fe-spinel + dark glass (magenta), apatite + dark glass (yellow). B Component spectra with colors conserved from A with thresholded area fractions expressed as a percentage