Fig. 3: Boudinage of Cr-Spinel in foliated listvenite.
From: Ductile deformation during carbonation of serpentinized peridotite
a Combined reflected and crossed-polarized light image with 1λ-plate. b, c Mg and Fe chemical maps of the area indicated in a, showing Fe-rich magnesite between spinel fragments and a Fe-bearing seam at the contact between magnesite in the boudin neck and the quartz-magnesite matrix (white arrow). Fe-magnesite in the core of an ellipsoid forms a sigma-clast in the matrix (yellow arrow, σ). d Scanning-electron microscopy cathodoluminescence (SEM-CL) image of the same area showing different magnesite generations and growth zoning in quartz. e Phase map from electron backscatter diffraction (EBSD). f Crystallographic orientations of magnesite (inverse pole figure (ipf) color scale: see inset). g Crystallographic orientation of chromite fragments (ipf color scale see inset) and kernel average misorientation of magnesite, showing low-angle boundaries in red. (Sample BT1B_14-3_77-80). Scale bars: 75 µm.
