Influence of rapid thermal annealing on the distribution of nitrogen atoms in GaAsN/GaAs

Лазаренко, А. А.; Yu., Shubina K.; Nikitina, E. V.; Pirogov, E. V.; Mizerov, A. M.; Sobolev, M. S.

doi:10.21883/sc.2022.13.53904.9697

Cited by 1 publication

(2 citation statements)

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“…As a result, the analysis of literature data (Vozniak et al, 1974;Lazarenko et al, 1963;Matkovskiy, 1961) and own goniometric studies of crystal morphology of "Marmarosh diamonds" from the deposits of the Ukrainian (Krosno, now Silesian and Dukla zones) and Slovak Carpathians (Dukla zone and Intra-Carpathian Paleogene zone) allowed to state that in general that the "Marmarosh diamonds" from the Slovak and Ukrainian Carpathians are similar. However, in (Dudok et al, 2002) it is said that the described individuals from the Slovak Carpathians are less characterized by polyhedra of prismatic habit.…”

Section: Crystal Morphology and Habitsmentioning

confidence: 99%

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Comparison of morphology of quartz crystals – “Marmarosh diamonds” – from Paleogene Flysch sequences of Krosno (Silesian) Zone, Dukla Zone in Ukrainian Carpathians, and Intra-Carpathian sequences of Western Carpathians

Olexandr¹,

Ihor²,

Halyna³

et al. 2022

Miner Slov

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Quartz crystals of “Marmarosh diamonds” type were goniometrically studied in Ukrainian Carpathians from the veins in flysch deposits of Krosno (Silesian) unit (137 crystals, locality 1 – New Beskydy Tunnel) and the Oligocene sediments of the Dukla Zone (77 crystals; loc. 2 – Pryslip pass). They were compared with quartz crystals from intra-Carpathian Paleogene sequences of the Western Carpathians in Slovakia (175 crystals; loc. 3 – Šoltysa stream). The analysis of the obtained results allows to state that the “Marmarosh diamonds” from the studied Ukrainian and Slovak localities are generally similar. The main simple forms represent the hexagonal prism m {101̅0} and the rhombohedra r {101̅1} and z {011̅1}. The following types of crystal habit have been identified: hexagonal-dipyramidal, pseudocubic, hexagonal-prismatic, trigonal-prismatic. For the polyhedra from the Ukrainian Carpathians, minor forms are less typical, such as the trigonal dipyramid s {112̅1} and the trapezoid x {516̅1}. Statistically, the shape of “Marmarosh diamond” crystals from the Ukrainian Carpathians is closer to isometric. For them, elongation along the main crystallographic axis is even less typical than for polyhedra from the Slovak localities. In addition, “Marmarosh diamonds” from the W. Carpathians in Slovakia are more often flattened at {101̅0}. In the process of crystal growth with decreasing temperature, the habit changes from hexagonal-dipyramidal to trigonal-prismatic. Quartz from Krosno (Silesian) zone of Ukrainian Carpathians was found in the association with calcite. There are numerous hydrocarbon inclusions in both minerals. The mineralogical crystallographic and geochemical investigations (especially of the migrating hydrocarbon fluids), are important for oil and gas geology of the Carpathian oil and gas-bearing province.

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Section: Crystal Morphology and Habitsmentioning

confidence: 99%

“…The first crystal morphological description of this quartz was made by Leidolt in 1885. Later it was supplemented by research by Arkhipova (1951Arkhipova ( , 1961, Lazarenko et al (1963) and Vozniak et al (1974).…”

Section: Introductionmentioning

confidence: 99%