Pyrope xenocrysts (N = 52) with associated inclusions of Ti-and/or Cr-rich oxide minerals from the Aldanskaya dyke and Ogonek diatreme (Chompolo field, southeastern Siberian craton) have been investigated. The majority of xenocrysts are of lherzolitic paragenesis and have concave-upwards (normal) REE N patterns with increase in concentration from LREE to M-HREE (Group 1). Four Ca-rich (5.7-7.4 wt.% CaO) pyropes are extremely low in Ti, Na, Y and have sinusoidal REE N spectra, thus exhibiting distinct geochemical signatures (Group 2). A peculiar xenocryst s165 is the only sample to show harzburgitic derivation, whilst demonstrating normal to weakly sinusoidal REE N pattern and the highest Zr (93 ppm) and Sc (471 ppm). Chromite-magnesiochromite, rutile, Mg-ilmenite, and crichtonite-group minerals comprise a suite of oxide mineral inclusions in the pyrope xenocrysts. These minerals are characteristically enriched in Cr with 0.6-7.2 wt.% Cr 2 O 3 in rutile, 0.7-3.6 wt.% in Mg-ilmenite and 7.1-18.0 wt.% in the crichtonite-group minerals. The LILE-enriched complex titanates of the crichtonite group are high in Al 2 O 3 (0.9-2.2 wt.%), ZrO 2 (1.5-5.4 wt.%) and comprise a trend of compositions from the Ca-Sr-specific varieties to the Ba-dominant species (e.g. lindsleyite). In the studied pyrope xenocrysts the oxides coexist with silicates (clino-and orthopyroxene, olivine), hydrous silicates (talc, phlogopite, amphibole), carbonate (magnesite), sulfides (pentlandite, chalcopyrite, breakdown products of monosulfide and bornite solid solutions), apatite and graphite. P-T estimates imply the inclusion-bearing pyrope xenocrysts to have been derived from low-T peridotite assemblages that resided at ~600-800 °C and a pressure range of ~25-35 kbar in the graphite stability field. The pyrope genesis is linked to the metasomatic enrichment of peridotite protoliths by Ca-Zr-LILE-bearing percolating fluid-melt phases containing significant volatile components. These metasomatic agents are likely volatile-rich melts or supercritical C-O-H-S fluids that were released from a Paleo-subduction slab.