Platinum grains from the Kazan placer in the South Urals contain inclusions of native metals (gold, osmium group alloys), as well as PGE chalcogenides: sulfides (laurite, erlichmanite, bauite), sulfoarsenides (irarsite and hollingworthite), stibiopalladinite, telluride – merenskiite, and selenides.

Figures 5. Tables 7. References 14.

Key words: Kazan player, platinum, native gold, alloys of the osmium group elements, tellurides, and sulfides PGE.

E.V. Zaykova,  South Urals Federal Research Center of Mineralogy and Geoecology UB RAS, Institute of Mineralogy, Miass, Chelyabinsk district, 456317, Russia; zaykova@mineralogy.ru

I.A. Blinov, South Urals Federal Research Center of Mineralogy and Geoecology UB RAS, Institute of Mineralogy, Miass, Chelyabinsk district, 456317, Russia;

V.V. Zaykov, South Urals Federal Research Center of Mineralogy and Geoecology UB RAS, Institute of Mineralogy, Miass, Chelyabinsk district, 456317, Russia;

V.A. Kotlyarov, South Urals Federal Research Center of Mineralogy and Geoecology UB RAS, Institute of Mineralogy, Miass, Chelyabinsk district, 456317, Russia

1. Artem’ev D.A., Zaykov V.V. (2018) [LA-ISP-MS analysis and trace elements in native platinum from the Southern Urals placers]. Geoarheologiya i arheologicheskaya mineralogiya-2018 [Geoarchaeology and archaeological mineralogy-2018]. Miass, IMin UB RAS, 161–165. (in Russian)

2. Barannikov A.G. (2006). [The Gogino gold-bearing placer district (Southern Urals)]. Yekaterinburg, UGGU, 197 p. (in Russian)

3. Belogub E.V., Zaykova E.V., Kotlyarov V.A., Shilovskikh V.V., Britvin S.N., Pautov L.A. (2019) [Selenium in minerals of platinum group elements from gold-bearing placers of the southern Urals]. Mineralogicheskie muzei-2019. Mineralogiya vchera, segodnya, zavtra. [Mineralogical museums-2019. Mineralogy: yesterday, today and tomorrow]. St. Petersburg, St. Petersburg State University, 87–89 (in Russian)

4. Petrovskaya N.V. (1997). Native gold. Moscow, Nauka, 345 p. (in Russian).
   Sigov A.P., Lomaev A.V., Sigov V.L., Storozhenko L.E., Khrypov V.N., Shub I.Z. (1971) [The Urals placers, conditions of their formation, location and elements of geomorphological forecast]. Geomorfologiya [Geomorphology], 1, 28–38. (in Russian).

5. Tolstykh N.D., Krivenko A.P., Pospelova L.N. (1997). [Unusual compounds of iridium, osmium and ruthenium with selenium, tellurium and arsenic from placers of the Zolotaya River (western Sayan)]. Zapiski VMO [Proceedings of the Russian Mineralogical Society], (6), 23–34. (in Russian).

6. Toma S.A., Murphy S. (1978) exsolution of gold from detrital platinum-group metal grains from Witwatersrand auriferous conglomerates. Canadian Mineralogist, 16, 641-650.

7. www.mindat.org

8. Zaykov V.V., Kotlyarov V.A., Zaykova E.V., Krainev Yu.D. (2016a). [Zonal ruthenium grains from the Maly Iemel placer (South Urals)] Metallogeniya drevnikh i sovremennykh okeanov-2016. Ot mineralogeneza k mestorozhdeniyam [Metallogeny of ancient and modern oceans-2016. From mineralogenesis to deposits]. Miass, IMin UB RAS, 219–224. (in Russian)

9. Zaykov V.V., Melekestseva I.Yu., Kotlyarov V.A., Zaykova E.V., Krainev Yu.D. (2016б) [Intergrowths of PGe minerals in the Miass placer zone and their primary sources]. Mineralogiya [Mineralogy], 4, 31–47. (in Russian)

10. Zaykov V.V. , Melekestseva I.Yu., Zaykova E.V., Kotlyarov V.A., Kraynev Yu.D. (2017). Gold and platinum group minerals in placers of the South Urals: composition, microinclusions of ore minerals and primary sources. Ore Geology Reviews, 85, 299–320.

11. Zaykov V.V., Savel’ev D.E., Zaykova E.V. (2018). [Nature of microinclusions of chrome spinel in grains of platinum group metals from gold placers in the South Urals]. Zapiski RMO [roceedings of the Russian Mineralogical Society], (5), 27–40. (in Russian).

12. Zaykov V.V., Tairov A.D., Zaikova E.V., Yuminov A.M., Kotlyarov V.A. (2016в) [Precious metals in ores and ancient gold products of Central eurasia]. Chelyabinsk, Kamennyi poyas, 314 p. (in Russian).