Figure 3
From: Carbonation and serpentinization of diopsidite in the Altun Mountains, NW China
Microstructural features of fresh and serpentinized diopsidites from the Yushishan area. (a, b, c) Fresh diopsidites, (b, c) cathodoluminescence images, (d-g) photomicrographs of serpentinized diopsidite with the Raman peaks of chrysotile and antigorite. (a) Microstructure of fresh diopsidite under crossed‐polarized light. (b) Diopsides (Di) show the texture of compositional zoning. (c) Cathodoluminescence images, diopside including dolomite (Dol). (d) Image of scanned full thin section showing heterogeneous serpentinization of diopside (Di) as well as with a late antigorite (Atg) + calcite (Cal) vein, apatite (Ap), zircon (Zrn). (e) Serpentinization occurred along the cleavage plane of diopside forming chrysotile (Ctl) + calcite (Cal) + relict diopside. (f) Completely serpentinized pseudomorph with chrysotile + calcite. (g) Late antigorite (Atg) + calcite vein.
