Search Results - "Sobolev, Nikolay V."
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Diamond-inclusion system recording old deep lithosphere conditions at Udachnaya (Siberia)
Published in Scientific reports (29-08-2019)“…Diamonds and their inclusions are unique fragments of deep Earth, which provide rare samples from inaccessible portions of our planet. Inclusion-free diamonds…”
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Trace Elements in Chromian Spinels from Four Siberian Kimberlites
Published in Minerals (Basel) (01-11-2022)“…We analysed the major, minor and trace elements chemistry of forty-two Cr-spinels from four Siberian kimberlites. They showed a wide range in Mg# (Mg/(Mg +…”
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Melting experiments on the Udachnaya kimberlite at 6.3–7.5GPa: Implications for the role of H2O in magma generation and formation of hydrous olivine
Published in Geochimica et cosmochimica acta (01-01-2013)“…Melting experiments on kimberlite from the Udachnaya pipe have been performed at 6.3–7.5GPa and 1300–1600°C using a split-sphere multianvil apparatus. The…”
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role of mantle ultrapotassic fluids in diamond formation
Published in Proceedings of the National Academy of Sciences - PNAS (29-05-2007)“…Analysis of data on micro- and nano-inclusions in mantle-derived and metamorphic diamonds shows that, to a first approximation, diamond-forming medium can be…”
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Types of Xenogenic Olivine from Siberian Kimberlites
Published in Minerals (Basel) (01-04-2020)“…This work is devoted to the systematization of the composition of xenogenic olivine from kimberlites as the main mineral composing the lithospheric mantle…”
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Erratum: Tychkov, N.S., et al. Types of Xenogenic Olivine from Siberian Kimberlites. Minerals 2020, 10, 302
Published in Minerals (Basel) (01-08-2020)“…The authors wish to make the following erratum to this paper [...]…”
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The secondary origin of diamonds: multi-modal radiation tomography of diamondiferous mantle eclogites
Published in International geology review (04-07-2014)“…Three-dimensional neutron and X-ray tomography reveals the textural and spatial relationship of diamonds and associated minerals in situ, in a unique suite of…”
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Petrology and geochemistry of Canadian diamonds: An up-to-date review
Published in Earth-science reviews (01-11-2023)“…Canada is one of the most important diamonds producers in the world despite the first diamond mine opening relatively recently in 1998 in the Slave craton…”
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Mineral and fluid inclusions in diamonds from the Urals placers, Russia: Evidence for solid molecular N2 and hydrocarbons in fluid inclusions
Published in Geochimica et cosmochimica acta (01-12-2019)“…The compositions of mineral inclusions from a representative collection (more than 140 samples) of diamonds from the placer deposits in the Ural Mountains were…”
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Geochemistry of garnetiferous Ti–clinohumite rock and talc–kyanite–phengite–almandine schist from the Kokchetav UHP terrane, Kazakhstan: An insight to possible origins of some chemically unusual UHP rocks
Published in Lithos (01-07-2010)“…Major-element, trace-element and O-isotope analyses were carried out for garnetiferous Ti–clinohumite rocks and eclogites from the Kumdy Kol area, as well as…”
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U–Pb ages of rare rutile inclusions in diamond indicate entrapment synchronous with kimberlite formation
Published in Lithos (15-12-2019)“…The timing of diamond crystallization is generally inferred from radiometric dating of individual or multiple mineral inclusions in diamond, where ages are…”
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The origin and formation of metamorphic microdiamonds from the Kokchetav massif, Kazakhstan: a nitrogen and carbon isotopic study
Published in Chemical geology (01-07-2001)“…This study reports δ 13C, δ 15N and N-content values for microdiamonds from ultrahigh-pressure metamorphic rocks of the Kokchetav massif in Kazakhstan. Both…”
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Quantifying hexagonal stacking in diamond
Published in Scientific reports (17-07-2019)“…Diamond is a material of immense technological importance and an ancient signifier for wealth and societal status. In geology, diamond forms as part of the…”
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Stability of phlogopite in ultrapotassic kimberlite-like systems at 5.5–7.5 GPa
Published in Contributions to mineralogy and petrology (01-04-2017)“…Hydrous K-rich kimberlite-like systems are studied experimentally at 5.5–7.5 GPa and 1200–1450 °C in terms of phase relations and conditions for formation and…”
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High-Mg carbonatitic microinclusions in some Yakutian diamonds—a new type of diamond-forming fluid
Published in Lithos (01-11-2009)“…The composition of microinclusions in 26 fibrous cubic and coated diamonds from the Daldyn-Alakit kimberlite field, Yakutia were studied using EPMA and FTIR…”
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Deep carbon cycling during subduction revealed by coexisting diamond-methane-magnesite in peridotite
Published in National science review (01-10-2023)“…Identification of multiphase inclusions in peridotite suggests that released carbon from a subducting slab can be stored as diamond+methane+magnesite in the…”
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Low water contents in diamond mineral inclusions: Proto-genetic origin in a dry cratonic lithosphere
Published in Earth and planetary science letters (01-01-2016)“…The mantle is the major reservoir of Earth's water, hosted within Nominally Anhydrous Minerals (NAMs) (e.g., Bell and Rossman, 1992; Peslier et al., 2010;…”
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The sources and time-integrated evolution of diamond-forming fluids – Trace elements and isotopic evidence
Published in Geochimica et cosmochimica acta (01-01-2014)“…Sub-micrometer inclusions in fibrous diamond growth zones carry high-density fluids (HDF) from which the host diamonds have precipitated. The chemistry of…”
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Composition of Hydrocarbons in Diamonds, Garnet, and Olivine from Diamondiferous Peridotites from the Udachnaya Pipe in Yakutia, Russia
Published in Engineering (Beijing, China) (01-06-2019)“…[Display omitted] •New data on volatiles in diamonds, associated garnet and olivine are given.•These results suggest on presence of wide range of hydrocarbons…”
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Diamond formation in an electric field under deep Earth conditions
Published in Science advances (01-01-2021)“…Most natural diamonds are formed in Earth's lithospheric mantle; however, the exact mechanisms behind their genesis remain debated. Given the occurrence of…”
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