The influence of formation conditions on the structural micro heterogeneity of shungites
| Autor: | Татьяна Юрьевна Товпенец, Tatiana Tovpenets |
|---|---|
| Jazyk: | English<br />Russian |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Transactions of the Karelian Research Centre of the Russian Academy of Sciences, Vol 0, Iss 11 (2018) |
| Druh dokumentu: | article |
| ISSN: | 1997-3217 2312-4504 |
| DOI: | 10.17076/geo864 |
| Popis: | Shungite rocks of the Onega Paleoproterozoic structure are volcanogenic-sedimentary Precambrian carbon-bearing formations that vary in genesis, mineral composition, structureand carbon (shungite) content. Shungite rocks have industrially useful properties due to which they can be considered as valuable multifunctional mineral raw materials.This paper presents the results of the study of the micro heterogeneity of the structural state of shungites of different geneses by Raman spectroscopy and electron microdiffraction.For the highly ordered shungites gathered from veins in Zazhogino and Maksovo sites, the range of values was significantly higher than for isolated shungite inclusionsin the rock. On the contrary, for the Maksovo shungite having the form of separate inclusions in the rock, the spread of the values was much narrower, indicating its lower microheterogeneity. The value of the coherent scattering region for Chebolaksha shungite was the highest, indicating a maximal structural order. The spread of values for different microareasof the sample is small, which is due to the lower micro heterogeneity of the shungite, and can be associated with the dominance of metamorphism factors over migrationprocesses. Shungite within one site was found to have a structural micro heterogeneity, which varies among occurrences and is associated with their genesis. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|