Results 1 to 10 of about 93,778 (119)
Prospecting models of primary diamond deposits of the north of the East European Platform
Записки Горного института, 2022 As a result of a comprehensive study of the geological structure and diamond presense of the northern part of the East European Platform, generalization of the data accumulated by various organizations in the USSR, the Russian Federation, and other ...
Victor N. Ustinov +2 more
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Geochemistry, Geophysics, Geosystems, 2022 Despite the scientific and economic significance of kimberlites and related magmas, their origin is unclear. Here, we address this issue using whole‐rock and perovskite‐derived Sr‐Nd‐Hf isotopes for the three occurrences of kimberlite, lamproites and ...
Hayden Dalton +7 more
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Analysis of Abnormal Birefringence and Graphite Inclusions in Zimbabwean Diamonds
Yankuang ceshi, 2022 BACKGROUND The Marange diamond deposit in Zimbabwe is characterized by producing mixed-habit (octahedral and cuboid) diamonds. Graphite inclusions in these diamonds only exist in cuboid sectors.
SUN Chengyang +4 more
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Scientific Reports, 2021 Rare oceanic diamonds are believed to have a mantle transition zone origin like super-deep continental diamonds. However, oceanic diamonds have a homogeneous and organic-like light carbon isotope signature (δ13C − 28 to − 20‰) instead of the extremely ...
Luc S. Doucet +2 more
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Spectroscopic Study of the 3107 cm−1 and 3143 cm−1 H-Related Defects in Type Ib Diamonds
Crystals, 2022 Hydrogen-related infrared absorption bands in natural diamonds have been extensively investigated and widely used to identify natural, treated, and synthetic diamonds grown by high pressure and high temperature (HPHT) and chemical vapor deposition (CVD ...
Zhonghua Song +5 more
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Measurement of foliar H2O2 concentration can be an indicator of riparian vegetation management
Scientific Reports, 2022 Riparian vegetation is frequently exposed to abiotic stress, which generates reactive oxygen species (ROS) caused by strong differences in a river’s hydrological conditions.
Takashi Asaeda +4 more
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Selection of collector composition and temperature conditions for diamond foam separation [PDF]
Journal of Mining and Metallurgy. Section A: Mining, 2022 Quantitative and qualitative regularities of a collector low and high molecular weight fractions distribution between solid and liquid phases in foam separation process were determined with the use of extraction-spectrophotometrical technique.
Morozov V.V. +4 more
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Yankuang ceshi, 2021 BACKGROUND In order to quickly identify and screen high pressure and high temperature (HPHT) grown synthetic diamonds, a lot of research about their luminescent and spectral characteristics has been done. However, the comparative analysis is lacking, and
YANG Chi-yu +6 more
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Illicit trafficking of diamonds: New frontiers
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2023 As it is often said, diamonds are forever. Lives, however, are not. At the hands of rebels, dictators, and terrorists, diamonds have crystallized into a source of financing for conflict and civil wars, which not only caused the deaths of more than two ...
Sebastiano Ettore Spoto
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Thermal Damage in Diamonds: the Protective Effect of Titanium Coating [PDF]
Materials Research, 2015 Many of the applications of diamonds expose them to high temperatures and atmospheres containing oxygen. Under these circumstances two important phenomena responsible for the thermal damage of diamonds are: oxidation and graphitization.
Marcio Carneiro Garcia Rosa +2 more
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