In many samples plagioclase was a prominent constituent. We have ignored it, supposing it to be a contaminant inadvertently scraped from walls of joints, or an unaltered remnant. X = present; - = not
Analysis no. 32-33, 34-35, 36-37, and 38-39 are the cores and rims of phenocrysts respectively 2.7 mm, 1.3 mm, 0.2 mm, and 0.08 mm wide. Total iron expressed as Fe2O3 for feldspars, FeO for chlorite a
