Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Alla Logvinova"'
Publikováno v:
Minerals, Vol 14, Iss 6, p 594 (2024)
The paper considers the possibility of changing the morphology of inclusions in diamonds based on the study of these inclusions and the inclusion–diamond boundary. Raman spectroscopy and transmission electron microscopy methods were used. According
Externí odkaz:
https://doaj.org/article/0cdd4f4827914688a4e1eb92d838652f
Publikováno v:
Geosystems and Geoenvironment, Vol 2, Iss 2, Pp 100156- (2023)
Thermobarometric calculations for mineral inclusions in diamonds provide a systematic comparison of P-T-fO2 conditions for different cratons and mobile belts worldwide, using a database of 4440 mineral EPMA analyses. Beneath all cratons, the cold bra
Externí odkaz:
https://doaj.org/article/d01f15206fbf42bc8768e10e43c01e3b
Autor:
Valeri Sonin, Anatoly Tomilenko, Egor Zhimulev, Taras Bul’bak, Aleksei Chepurov, Yuri Babich, Alla Logvinova, Tat’yana Timina, Anatoly Chepurov
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract Diamonds grown by high pressure high temperature process (HPHT) are usually characterized by yellow color and high contents of nitrogen. Introduction of Ti decreases nitrogen content in diamond. Understanding the formation of nitrogen-poor d
Externí odkaz:
https://doaj.org/article/e20d79bc43374502a39e5c58bd08c6a1
Autor:
Marco Venier, Luca Ziberna, Francesco Princivalle, Maurizio Petrelli, Vanni Lughi, Alla Logvinova, Nikolay V. Sobolev, Gianluca Turco, Davide Lenaz
Publikováno v:
Minerals, Vol 12, Iss 11, p 1439 (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 + Fe2+); 0.42–0.78) and Cr# (Cr/(Cr + Al); 0.32–0.92) and a common trend of increasing Cr# w
Externí odkaz:
https://doaj.org/article/0f9a49fe63a348c48f3c58312cd7e6a0
Autor:
Igor Ashchepkov, Alla Logvinova, Zdislav Spetsius, Hilary Downes, Theodoros Ntaflos, Alexandr Ivanov, Vladimir Zinchenko, Sergey Kostrovitsky, Yury Ovchinnikov
Publikováno v:
Minerals, Vol 12, Iss 11, p 1353 (2022)
The pressure-temperature (PT) conditions and position of different groups of eclogites in the sub-cratonic lithospheric mantle (SCLM) worldwide were established using clinopyroxene Jd-Di and garnet thermobarometry. Beneath Siberia, Fe-eclogites found
Externí odkaz:
https://doaj.org/article/55ef1aa81bed482a9f15093f38d936c1
Autor:
Valentin Afanasiev, Sargylana Ugapeva, Yuri Babich, Valeri Sonin, Alla Logvinova, Alexander Yelisseyev, Sergey Goryainov, Alexey Agashev, Oksana Ivanova
Publikováno v:
Minerals, Vol 12, Iss 8, p 1048 (2022)
A diamond plate cut out of a transparent, colorless octahedral diamond crystal of gem quality, with a small chromite inclusion in the core, sampled from the XXIII CPSU Congress kimberlite (Yakutia, Mirny kimberlite field, vicinities of Mirny city), h
Externí odkaz:
https://doaj.org/article/91dbc9ea682a441bbce8543ea2720667
Publikováno v:
Minerals, Vol 9, Iss 1, p 50 (2019)
The microinclusions in cuboid diamonds from Ebelyakh River deposits (northeastern Siberian craton) have been investigated by FIB/TEM techniques. It was found that these microinclusions have multiphase associations, containing silicates, oxides, carbo
Externí odkaz:
https://doaj.org/article/c890000f191e4259b0b3fa15e93cf509
Publikováno v:
Domestic geology. :50-63
Specific features of the microimpurity composition of chrome-spinel inclusions in 323 diamond crystals from eight kimberlite pipes of two diamond-bearing regions of Yakutia were revealed by microprobe analysis. Processed data on their content of the
Autor:
Igor Ashchepkov, Alla Logvinova, Zdislav Spetsius, Theodoros Ntaflos, Hilary Downes, Nikolay Vladykin, Alexander Ivanov
The PT conditions and position of different groups of eclogites in the subcratonic lithospheric mantle (SCLM) worldwide has been established using clinopyroxene Jd-Di thermobarometry for different cratons and kimberlite localities. Beneath Siberia, F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce8c0ea7a92369a6eab0c32bddcdbb04
https://doi.org/10.5194/egusphere-egu21-1749
https://doi.org/10.5194/egusphere-egu21-1749