Figure 4
From: Carbonation and serpentinization of diopsidite in the Altun Mountains, NW China
Optical cathodoluminescence (CL) images of serpentinized diopsidite from the Yushishan area. (a) Serpentinized diopsides with inhomogeneous cathodoluminescence. (b) Serpentinization occurred around a diopside grain (Di) and formed chrysotile (Ctl) + calcite (Cal). (c) Chrysotile and calcite formed along the cleavage plane of diopside. (d) Relict diopside rimmed by a layer of chrysotile followed by a layer of calcite. (e) Complete serpentinization of diopside forming along cleavages. (f) Complete serpentinization of diopside forming pseudomorphs of chrysotile + calcite with network fabrics. (g) Serpentinized diopsides crosscut by a late antigorite (Atg) + calcite vein. (h) Pseudomorph crosscut by a late antigorite + calcite vein with the chrysotile replaced by antigorite. (i) Late growth of antigorite and calcite veins.
