Fig. 1: Carbonate-sulfide textures in mantle xenoliths from Patagonia, South Africa, and Italy.
From: Fluxing of mantle carbon as a physical agent for metallogenic fertilization of the crust
All images are backscattered electron images, except f, which is a transmitted light image in crossed polars. a Sulfide inclusion at the triple junction of Ca-Mg carbonate, olivine (ol), and clinopyroxene (cpx) in a mantle xenolith from Patagonia; b glass-hosted sulfide with spinel and Pd-telluride inclusions in millerite in a mantle xenolith from Patagonia; c sulfide alongside silicate and apatite (ap) with clinopyroxene and olivine in a mantle xenolith from Patagonia; d “pool” of calcite and sulfide within MARID xenolith from Kimberly, South Africa, in contact with K-richterite (K-rich) and diopside (clinopyroxene); e enlarged view of sulfide-rich part of the carbonate “pool” shown in d, comprising Ni- and Cu sulfides, native Cu, Ni-As-sulfides, magnetite (mt), and titanite (tt); f inclusions of calcite, barite, and calcite–barite within an olivine xenocryst from Vulture, Italy; g interstitial calcite within mantle peridotite xenolith from Vulture with Ni-Fe-sulfide altered to Ni-Fe-oxides hosted within calcite; h Fe-Ni-Cu-sulfide with calcite at the grain boundary between olivine grains in a mantle peridotite from Vulture. A Pt-bearing phase, possibly Pt-S or native Pt, is present within the sulfide.
