Peculiar corundum type with exotic inclusions of oxygen-free (Fe-Ti-Si) and oxide (Ti-Zr-Al-TR) phases have been studied. This mineral was discovered in explosive volcaniclastic deposits on Ukraine where it invariably occur as a component of explosive mantle-derived mineral association including silicate-metallic spherules, intermetallic alloys, ferosilicides, qusongite (CW), moissanite, diamond. Oxygen-free corundum phasese include osbornite (TiN), Ti-Fe silicides, native iron. Oxide ones include hibonite (crystal phase), Ti-Zr-Al and Ti-Al solid solution phase, rutile phase, glass-like phase with feldspar composition.
Keywords: mantle corundum, spherules, mantle minerals, native metals, diamond, osbornite, hibonite, scandium, cerium, explosive formations.