M. S. Glukhov / News of the Ural State Mining University. 2019. Issue 1(53), pp. 60-66

Relevance of the work: The origin of iron oxide microspheres is associated with cosmic, terrestrial (abiogenic, biogenic) and technogenic processes. The study of such objects is important for the knowledge of mineral formation on Earth, the structure and composition of cosmic bodies, the role of man-made processes in the formation of new minerals. The detection of microspheres in sedimentary strata helps to complement the methods of correlation of different facies strata at the global, regional and local levels and helps in the search for stratified minerals as well.
Purpose of the work: study of features of the internal structure of natural and man-made iron oxide microspheres. Main tasks: study of pore space and possible textures, check for the presence of differentiation of a substance.
Research methodology: All studied objects were taken from powdered samples using a permanent and neodymium magnet. With the help of microtomography, iron oxide microspheres selected from the magnetic fraction from impactites of the Ris crater (from the Upper Paleozoic rocks of the East European Platform and the Pre-Ural fore deep), and man-made (welding) microspheres were studied. The same objects in polished sections were examined using scanning electron microscopy.
Results. The study of X-ray computer microtomography objects in two-dimensional and three-dimensional space showed differences in the voids of technogenic and natural microspheres. The differences are confirmed by electron microscopy. The differentiation of the substance in iron oxide microspheres is confirmed by tomographic studies and electron microscopy. Chemical composition was studied for the inner part of iron oxide microspheres from the impactites of the Ris crater. The primitiveness of the chemical composition confirms their cosmic origin.
Conclusions. The combined use of the conventional approach with precision methods approximates the decoding of the genesis of microobjects.

Keywords: iron oxide microspheres, microtomography, electron microscopy, voids, substance differentiation.

REFERENCES

1. Bulat S. A., Ezhov V. F., Tsel’movich V. А. 2018, Pervoye obnaruzheniye zhelezonikelevykh mikrometeoritov v prisnezhnom pokrove Tsentral’noy Vostochnoy Antarktidy, stantsiya Vostok [The fi rst detection of iron-nickel micrometeorites in the subniveal cover of Central East Antarctic Continent, Vostok station]. Physical, chemical and petrophysical studies in earth sciences: The Nineteenth International Conference (Moscow, 24–26, Borok, 28 Sep. 2018). Moscow, pp. 45–48.
2. Vernadsky V. I. 1941, About the need for an organized scientifi c work on cosmic dust. Problemy Arktiki [Arctic Research], no. 5, pp. 55–64. (In Russ.)
3. Divari N. B. 1948, About the collection of cosmic dust at the Tuyuk-Su glacier. Meteoritika [Meteoritics]. Мoscow, Issue IV, pp. 120–122. (In Russ.)
4. Grachev A. F. 2010, About the nature of cosmic dust in sedimentary rocks. Fizika Zemli [Physics of the Solid Earth], no. 11, pp. 3–13. (In Russ.)
5. Karpov G. A., Mokhov A. V. 2010, Small particles of native metals, sulphides and oxides in andesitic ashes of the Karymsky volcano. Vulkanologiya i seysmologiya [Journal of Volcanology and Seismology], no. 3, pp. 19–35. (In Russ.). URL: https://elibrary.ru/item.asp?id=15109585
6. Korinevsky V. G., Korinevsky E. V. 2012, Magnetic microspheres in carbonatites of the Southern Urals. Metallogeniya drevnikh i sovremennykh okeanov [Metallogeny of ancient and modern oceans – 2018]. Volcanism and ore formation. Miass, pp. 225–228.
7. Sungatullin R. Kh., Sungatullina G. M., Zakirov M. I., V. Tsel’movich V. A. Glukhov M. S., Bakhtin A. I., Osin Yu. N., Vorob’ev V. V. 2017,
Microspheres of cosmic origin in the Carboniferous rocks of the Usolka section, Pre-Ural fore deep. Geologiya i geofi zika [Geology and Geophysics], vol. 58, no. 1, pp. 74–85. (In Russ.) https://dx.doi.org/10.15372/GiG20170106
8. Murray I. 1876, On the distribution of volcanic debris over the fl oor of ocean. Proceedings of the Royal Society of Edinburgh, vol. 9, pp. 247–261. https://doi.org/10.1017/S0370164600032181
9. Sungatullin R. Kh., Glukhov M. S., Galiullin B. M., Sungatullina G. M., Bakhtin A. I., Vishnykov A. K., Vafi na M.S., Gusev A. V., Kuzina D. M. 2018,First Finds of Space Microspheres in the Evaporites of the Urals Foredeep, Russia First Finds of Space Microspheres in the Evaporites of the Urals Foredeep, Russia. Meteoritics & Planetary Science, vol. 53, issue S1, p. 6291.
10. Sungatullin R., Glukhov M., Galiullin B., Statsenco E., Sungatullina G. 2018, Cosmic Microspheres from the Deposits of the Moscovian Stage of the Eastern Part of the Russian Plate. Advances in Devonian, Carboniferous and Permian Research: Stratigraphy, Environments, Climate and Resources: proceedings Kazan Golovkinsky Stratigraphic Meeting (Kazan, Russian Federation, 19–23 Sept. 2017. Bologna: Filodiritto Publisher, pp. 431–439.
11. Bortnikov N. S., Novikov V. M., Boeva N. M., Zukhlistov A. P., Gendler T. S., Zhegallo E. A., Soboleva S. V. 2016, The fi rst fi nding of biogenic nanosiderite in oxidized ferruginous quartzites of the Lebedinsky deposit KMA. Doklady Akademii nauk [Doklady Earth Sciences], vol. 466, no. 5, pp. 569–573. (In Russ.)
12. Korchagin O. A. 2010, The availability of metallic microspheres and small particles in the early Cenomanian of Crimea – “cosmic dust event”. Doklady Akademii nauk [Doklady Earth Sciences], vol. 431, no. 6, pp. 783–787. URL: https://elibrary.ru/item.asp?id=13857258
13. Makarov A. B., Osovetsky B. M., Antonova I. А. 2017, Magnetic spherules from the soil near the ash heap of the Nizhny Tagil Iron and Steel Works.
Izvestiya UGGU [News of the Ural State Mining University], issue 4 (48), pp. 42–45. (In Russ.) https://doi.org/10.21440/2307-2091-2017-4-42-45
14. Novikov V. M., Bortnikov N. S., Boeva N. M., Zhukhlistov A. P., Zaitseva L. V., Novakova A. A., Kustov Yu. E., Kochnev V. E. 2017, Biogenic hematite of rich iron ores of the Belenikhinsky deposit of the Belgorod KMA. Vestnik VGU. Geologiya [Proceedings of Voronezh State University. Geology], no. 4, pp. 58–62. (In Russ.)
15. Bourliva A., Papadopoulou L., Aidona E., Giouri K., Simeonidis K., Vourlias G. 2017, Characterization and geochemistry of technogenic
magnetic particles (TMPs) in contaminated industrial soils: Assessing health risk via ingestion. Geoderma. Vol. 295, pp. 86–97. https://doi.org/10.1016/j.geoderma.2017.02.001
16. Glukhov M. S., Sungatullin R. Kh., Galiullin B. M., Sungatullina G. M., Bakhtin A. I., Gusev A. V., Kuzina D. M. 2018, Metallic microspheres of cosmic and technogenic originMicrospheres of Cosmic and Technogenic Origin. Meteoritics & Planetary Science, vol. 53, issue S1, p. 6202.
17. Sungatullin R. Kh., G. Sungatullina G. M., Glukhov, M. S., Osin Yu. N., Vorob’ev V. V. 2015, Opportunities for the use of space microspheres while tracking oil and gas sediments. Neftyanoye khozyaystvo [Oil industry], no. 2, pp. 16–19. (In Russ.)
18. Sungatullin R. Kh., Bakhtin A. I., Tsel’movich V. A., Sungatullina G. M., Glukhov, M. S., Osin Yu. N., Vorob’ev V. V. 2015 , Iron-nickel microparticles in sedimentary rocks as indicators of cosmic processes. Uchenye Zapiski Kazanskogo Universiteta. Seriya Estestvennye Nauki [Proceedings of Kazan University. Natural Sciences Series], vol. 157. Book 3, pp. 102–118. (In Russ.)