| Инд. авторы: | Shiryaev A.A., Khokhryakov A.F., Reutsky V.N., Golovanova T.I. |
| Заглавие: | Structure and Defects in Natural Ballas-Type Diamonds: a Case Study |
| Библ. ссылка: | Shiryaev A.A., Khokhryakov A.F., Reutsky V.N., Golovanova T.I. Structure and Defects in Natural Ballas-Type Diamonds: a Case Study // Geochemistry International. - 2020. - Vol.58. - Iss. 12. - P.1299-1312. - ISSN 0016-7029. - EISSN 1531-8397. |
| Внешние системы: | DOI: 10.1134/S0016702920120058; WoS: 000595569400001; |
| Реферат: | eng: Structure, defects and inclusions in natural polycrystalline ballas-type diamonds are studied by complementary techniques: Scanning Electron microscopy, cathodo- and photoluminescence, X-ray diffraction, radiography and fluorescence, infra-red spectroscopy and carbon isotope analyses. Peculiarities of internal structure of some of the samples are explained by growth of the diamonds as volume-filling dendrites. Similarities of structure and mineralogy of trapped inclusions between ballas-type diamonds with fibrous and cuboid diamonds are established. However, significant differences between growth mechanisms of all these varieties exist and are possibly explained by variations in carbon supersaturation and diamond wettability by growth medium.
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| Ключевые слова: | point defects; inclusions; carbon isotopic composition; polycrystalline diamond; ballas; amber defects; |
| Издано: | 2020 |
| Физ. характеристика: | с.1299-1312 |