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Fig. 6 | Swiss Journal of Geosciences

Fig. 6

From: Serpentinite dehydration at low pressures

Fig. 6

Zone V: a Photograph of the outcrop from zone V (Val Sissone), olivine-chlorite-orthopyroxene-(Al-spinel)-Mg-hornblende-anthophyllite rock with indicated white amphibole-rich patches and large single crystal olivine. b Photograph of a saw cut showing dark Al-spinel encircled by a greyish chlorite rim, grey orthopyroxene and brown olivine (tweezers 4.5 cm length). c Crossed polarised light image of sample Ol9 in zone V containing inclusion-rich orthopyroxene with Ca-amphibole intergrowth. d Backscatter image of c showing orthopyroxene containing inclusions of chlorite, olivine and a zoned Ca-amphibole intergrowth that consists of tremolite in the core, Mg-hornblende forming rim1 and tremolite rim2. e Backscatter image of orthopyroxene from sample Ol38 containing chlorite and olivine inclusions. f Backscatter image of sample Ol38 shows orthopyroxene intergrowth with anthophyllite. g Backscatter image of sample Ol38 exhibiting orthopyroxene with Al-spinel and chlorite inclusions. h Backscatter image of sample Ol38 containing a Cr–Al-spinel grain aggregate with sub-grains consisting of bright cores and darker rims. Retrograde replacement rims of Cr–Al-spinel consist of bright magnetite and dark chlorite

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