Djerfisherite in the Udachnaya-East pipe kimberlites (Sakha-Yakutia, Russia): paragenesis, composition and origin

Ultrafresh salty kimberlite of the Udachnaya–East pipe (Yakutia, Russia): A petrological oddity or fortuitous discovery?

“…Kimberlites from Udachnaya-East have provided detailed constraints on mineral assemblages and melt composition that are difficult (or impossible) to obtain in more altered kimberlite Kamenetsky et al, 2004Kamenetsky et al, , 2006Kamenetsky et al, , 2007aKamenetsky et al, , 2007bKamenetsky et al, , 2008Kamenetsky et al, , 2009aKamenetsky et al, , 2009bKamenetsky et al, , 2009cMaas et al, 2005;Mernagh et al, 2011;Sharygin et al, 2007Sharygin et al, , 2008. These findings and constraints include: 1) recognition of two populations of olivine, with distinct morphological and chemical features; 2) detailed characterisation of chemical, zoning and growth/resorption features in one of these (the euhedral) olivine population; 3) analysis of the mineral assemblage coexisting with liquidus (euhedral) olivine, based on crystal inclusions in olivine; 4) characterisation of melt and fluid inclusions in olivine; thermometric experiments on these inclusions, directed at understanding temperature and pressure of crystallisation; 5) microanalytical analysis of melt and fluid inclusions (laser Raman spectroscopy, laser ablation ICPMS, proton-induced X-ray emission, electron microprobe, etc.)…”

Links between deformation, chemical enrichments and Li-isotope compositions in the lithospheric mantle of the central Siberian craton

“…The Sharygin et al, 2007). Importantly, the textures and mineralogy of these materials imply an origin by precipitation from metasomatic media (likely related to kimberlites) during metasomatism or xenolith transport, and not via solidification of injected kimberlite magma.…”

Can primitive kimberlite melts be alkali‐carbonate liquids: Composition of the melt snapshots preserved in deepest mantle xenoliths

“…[20,70,72,73] Detailed studies of the chemical and mineralogical compositions of these unaltered kimberlites can be found elsewhere. [13][14][15]17,18,[72][73][74][75][76][77][78] These kimberlites also contain various types of unserpentinised mantle xenoliths [66][67][68][79][80][81] The studied sheared peridotite xenoliths are defined by the presence of large porphyroclasts (1-10 mm) of olivine, garnet, and pyroxene, which are set in a matrix consisting of very fine-grained neoblasts (0.1-0.5 mm) of mostly olivine and lesser pyroxene (Figures 1b and 2). According to textural classifications, [82,83] the studied samples have porphyroclastic, mosaic-porphyroclastic, and fluidal-mosaic-porphyroclastic textures (Figures 1b and 2 and Table 1).…”