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Journal V.25.No.3.2023
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Mineralogical and technological features of gold from placers of the southern slope of Belaya Gora (Khabarovsk Krai) and stages of its formation

N.A. Lavrik, N.M. Litvinova, A.V. Lavrik

Original article

DOI https://doi.org/10.18599/grs.2023.3.23

198-207
rus.

open access

Under a Creative Commons license

The gold-placer deposit of Pokrovsky-Verny streams is formed on the southern slope of Belaya Gora (Khabarovsk Krai), where streams drain gold formations of the same-name deposit. The gold content in the waste dumps of past years often reaches commercial concentrations, which allows to be re-processed them and some of the gold goes back into the dumps. The field formed by ore and alluvial formations is a complex volcanic structure with a concentric-zone structure underlined by faults. At the initial stage of research, the goal was to determine the content of the precious metal in gravity concentrate samples from the placers, the study of the mineralogical and technological characteristics of gold going into dumps. 135 gold grains ranging in size from 10–15 µm to 3 mm were studied using an electron scanning microscope. Six main species were distinguished by composition and morphology: high-grade in the form of isometric crystals; aggregates of gold crystals with 0–29% silver admixture; dendrites with up to 41% silver admixture; grayish gold and silver amalgams; loose weishanite (Au,Ag)3Hg2 formations of gray color; aggregates of ore-bearing and nonmetalliferous minerals with gold, in which the precious metal is less than half the grain. All gold grains have a flattened shape, variably contain inclusions of clay minerals, quartz, hematite, ilmenite, magnetite, limonite. Grains of native metals and intermetallic compounds are isolated in mineral association with gold. The revealed features of gold show that the formation of the precious metal is associated with hypogenic and epithermal processes, as well as with fluid emanations coming through late deep faults. Effective gold recovery requires several stages mineral processing.

 

gold-placer deposit of the Pokrovsky-Verny streams, Belaya Gora gold deposit, gold, electrum, amalgam, weishanite, intergrowths, loss of gold

 

  • Alekseev V.S., Banshchikova T.S., Seryi R.S. (2019). Substantiation of the Use of Magnetic Separation in Processing the Initial Sands of the Ore-Placer Deposit of the Bolotisty Stream (Nicshnee Priamurye). Gornyy informatsionno-analiticheskiy byulleten’ = Mining Information and Analytical Bulletin, (8), pp. 190–197. (In Russ.)
  • Belaya Gora gold deposit. Subsoil of the Far East (2022). (In Russ.) https://nedradv.ru/nedradv/ru/find_place?obj=f2f5e2370b07304ef3b5b8e49142a516
  • Damdinov B.B., Roshchektaev P.A., Kanakin S.V. (2012). Au-Ag-Hg intermetallides in the ores of the Konevinsky gold ore deposit (East Sayan). Proc. III All-Russian Sci. Pract. Conf.: Mineralogeny of Northeast Asia. Ulan-Ude: Ekos Publ., pp. 220–222. (In Russ.)
  • Goldfarb Yu.I., Preis V.K. (2010). Gold reserves in spent placers of the North-East of Russia. Native gold: typomorphism of mineral associations, conditions for the formation of deposits, problems of applied research: Proc. All-Russi. Conf. Vol. I. Moscow: IGEM RAN, pp. 153–155. (In Russ.)
  • Gorelikova N.V., Magazina L.O., Naumov V.A. (2010). Natural amalgams Au and Pt in gold-bearing placers of the Nicshne-Kamskaya Depression. Native gold: typomorphism of mineral associations, conditions for the formation of deposits, problems of applied research: Proc. All-Russi. Conf. Vol. I. Moscow: IGEM RAN, pp. 156–158. (In Russ.)
  • Khalilova Z.A. (2011). Ascent to the “Belaya Gora”. Gornaya promyshlennost’, 6 (100), p. 64. (In Russ.)
  • Kondratyeva L.A. (2010). Native gold typomorphism of the Zaderzhninskoe deposit. Native gold: typomorphism of mineral associations, conditions for the formation of deposits, problems of applied research: Proc. All-Russi. Conf. Vol. I. Moscow: IGEM RAN, pp. 264–265. (In Russ.)
  • Konstantinov M.M., Kosovets T.N. (2010). Sikhote-Alin Province Gold ore deposits in Russia. Moscow: Akvarel, pp. 242–259. (In Russ.)
  • Kuznetsova I.V., Safronov P.P., Moiseenko N.V. (2019). Matter-mineral characteristics of technogene placers – potential sources of precious metals (on the example of the Nizhneselemdzhinsky gold-bearing node of Priamurye, Russia). Georesursy = Georesources, 21(1), pp. 2–14. https://doi.org/10.18599/grs.2019.2.3-14
  • Li Y., Ouyang Sh., Tian P. (1984). Weishanite – a new gold-bearing mineral. Acta Mineralogica Sinica, 4(2), pp. 102–105. (in Chinese)
  • Medvedev E.I., Molchanov V.P. (2013). Amalgam of gold and its satellite minerals (Far East, Primorye). Fundamental’nye issledovaniya, 11(5), pp. 958–963. (In Russ.)
  • Mirzekhanov G.S., Mirzekhanova Z.G. (2022). Influence of heavy minerals on technological losses of gold during mining of alluvial deposits in the Far East region. Gornyy zhurnal, (7), pp. 22–26. (In Russ.)
  • Mishin L.F. (1999). Hydrothermally altered rocks and prospecting assessment of the Belaya Gora deposit. Geology and minerals of the Amur region: Coll. papers. Khabarovsk: Magellan, pp. 172–177. (In Russ.)
  • Moiseenko V.G., Eirish L.V. (1996). Gold ore deposits of the East of Russia. Vladivostok: Dalnauka, 352 p. (In Russ.)
  • Onikhimovsky V.V., Belomestnykh Yu.S. (1996). Minerals of Khabarovsk Krai (Field development potential). Khabarovsk, 495 p. (In Russ.)
  • Ostapenko N.S., Neroda O.N. (2019). Some features of the formation of gold deposits Khakanja, Mnogovershinnoye and Belaya Gora (Russia). Mezhdunarodnyy nauchno-issledovatel’skiy zhurnal, (12), Part 1, pp. 148–153. (In Russ.)
  • Ozerova N.A. (1986). Mercury and endogenous ore formation. Moscow: Nauka, 242 p. (In Russ.)
  • Petrovskaya N.V. (1973). Native gold (general characteristic, typomorphism, questions of genesis). Moscow: Nauka, 347 p. (In Russ.)
  • Redin Y.O. (2015). Gold ore mineralization of the Lugokan ore node (Eastern Transbaikalia): mineral associations, age, endogene zoning. Cand. geol. and mineral. sci. diss. Novosibirsk, 124 p. (In Russ.)
  • Shilo N.A. (2000). The doctrine of placers. Moscow: Izd-vo Akad. gornykh nauk, 632 p. (In Russ.)
  • Volodkova T.V. (2010). Features of ore-bearing paleovolcanic structures of Priamurye and Kuril volcanoes according to aerogeophysical data. New and unconventional types of mineral deposits in the Baikal region and Transbaikalia: Proc. All-Russian Sci. Pract. Conf. Ulan-Ude, pp. 45–48. (In Russ.)
  • Yamamoto Y., Miura T., Suzuki M., Kawamura N., Miyagawa H., Nakamura T., Kobayashi K., Teranishi T., Hori H. (2014). Direct evidence for ferromagnetic spin polarization in gold nanoparticles. Physical Review Letters, 93(11), 116801. https://doi.org/10.1103/PhysRevLett.93.116801
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Natalia A. Lavrik – Senior Researcher
Khabarovsk Federal Research Center of the Far-East Branch of the Russian Academy of Sciences
51, Turgeneva st., Khabarovsk, 680000, Russian Federation
e-mail: lavrik@igd.khv.ru
 
Natalia M. Litvinova – Cand. Sci. (Engineering), Leading Researcher
Khabarovsk Federal Research Center of the Far-East Branch of the Russian Academy of Sciences
51, Turgeneva st., Khabarovsk, 680000, Russian Federation
 
Alexandra V. Lavrik – Junior Researcher
Khabarovsk Federal Research Center of the Far-East Branch of the Russian Academy of Sciences
51, Turgeneva st., Khabarovsk, 680000, Russian Federation
 
 

For citation:

Lavrik N.A., Litvinova N.M., Lavrik A.V. (2023). Mineralogical and technological features of gold from placers of the southern slope of Belaya Gora (Khabarovsk Krai) and stages of its formation. Georesursy = Georesources, 25(3), pp. 198–207. https://doi.org/10.18599/grs.2023.3.23

 

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