Fig. 10
Quantitative major and minor element maps of a section in sample FA showing the two olivine generations, olivine1 (Ol1) on the right hand side of the white line and olivine2 (Ol2) to the left (a–d). The thin section image is given in Additional file 5: Figure S4. e–f Quantitative map of a different location within the same thin section FA. a Al2O3 content showing the distribution of chlorite and antigorite in both generations. b Mg# variation in both olivine generations, note the patchy zoning in olivine1 versus the apparently concentric zoning in olivine2. c Ti-clinohumite lamellae in olivine1 and discrete grains of Ti-clinohumite forming a mosaic texture with olivine2. d Relic magnetite mesh texture in olivine1 and relic Cr-rich magnetite in olivine2. e Al2O3 content of antigorite and chlorite forming a mosaic texture with “black” olivine2. f Al# indicating two generations of serpentine, high Al# antigorites forming a mosaic texture with chlorite and olivine, note the lower Al# towards their rims, and low Al# serpentine distributed around “black” olivine