The finding of native tungsten microcrystals in Bilokorovychi proterozoic conglomerates of the Volyn

TitleThe finding of native tungsten microcrystals in Bilokorovychi proterozoic conglomerates of the Volyn
Publication TypeJournal Article
Year of Publication2014
AuthorsKvasnytsya, VM, Pavliuk, OV, Kvasnytsya, IV, Vysotskyi, BL, Gurnenko, IV
Abbreviated Key TitleDopov. Nac. akad. nauk Ukr.
Date Published11/2014

Microcrystals of native tungsten on grains of native gold from Bilokorovychi proterozoic conglomerates of the Volyn region have been established. They are somewhat flattened perfect octahedrons (?); their sizes are from 2 to 10 microns. The tungsten crystals are the first discovery of polyhedrons of this mineral in Ukraine and, perhaps, are the second discovery in the world. They are closely associated with nano-microcrystals of secondary native gold, which grows on the original grains of native gold. The tungsten microcrystals contain almost no impurities, sometimes only to 0.16 wt. % of chromium. Probably, as a secondary gold, the tungsten microcrystals were formed in situ during the formation of Bilokorovychi conglomerates. The comparison of the extremely rare mineral by the basic features found in the various geological environments has been made.

Keywordsmicrocrystals, native tungsten, Volyn

1. Ivensen Yu. P., Levin V. I. Izv. Tom. politekhn. in-ta, 1970, 239: Voprosy geologii mestorozhdenii zolota: 25–30 (in Russian).
2. Matkovskiy O. I., Fenoshin U. I., Slivko E. M. Mineralogical criteria genesis and prospecting gold occurrence in the Proterozoic conglomerates. In: Using mineralogical research methods at the forecast, the search for and evaluation of mineral deposits Proc. rep. First Rep. ings of the Conference. on the butt. mineralogy, Vol. 1, Alma-Ata: Izd-vo Kazakh. in-ta mineral. syria, 1981: 78–79 (in Russian).
3. Slivko E. M. Mineralogy and the question of genesis of Precambrian conglomerates of Belokorovichskaya structure: (Abstract of dissertation), Lvov, Lvov. gos. un-t, 1986 (in Russian).
4. Metalidi S. V., Zaritskiy A. I., Tsymbal S. N. et al. Mineral. zhurn., 1982, 4, No 3: 20–29 (in Russian).
5. Glavatskikh S. F., Trubkin N. V. Dokl. AN USSR, 2000, 373, No 4: 523–526 (in Russian).
6. Lukin A. E. Dopov. Nac. akad. nak Ukr., 2009, No 2: 121–130 (in Russian).
7. Mokhov A. V. New ultra-fine mineral phases of the lunar regolith by analytical electron microscopy: (Abstract of Doctoral dissertation), Moscow, In-t geologii rudnykh mestorozhdenii, petrografii, mineralogii i geokhimii RAN, 2009 (in Russian).
8. Novgorodova M. I., Nedashkovskaya N. N., Rasskazov A. V. et al. Dokl AN USSR, 1995, 340, No 5: 681–684 (in Russian).
9. Semenenko V., Girich A. Mineral. zb., 2012, No 62, Iss. 1: 119–127 (in Ukrainian).
10. Mills S. J., Kartashov P. M., Ma C. et al. Amer. Mineral., 2011, 96: 1166–1170.
11. Mills S. J., Kartashov P. M., Kampf A. R. et al. Mineral. Magazine, 2011,  75: 2537–2542.
12. Korobushkina E. D., Korobushkin I. M. Dokl. AN USSR, 1986, 287, No 4: 978–980 (in Russian).
13. Kuimova N. G., Moiseenko V. G. Litosfera, 2006, No 3: 83–95 (in Russian).
14. Fedonkin M. A. Paleontol. zhurn., 2003, No 6: 33–40 (in Russian).
15. Voevodin V. N. Dopov. Nac. akad. nauk Ukr., 2008, No 6: 101–108 (in Ukrainian).