Assessment of gold melt influence on platinoid microinclusions in ancient gold products: a comparison with experimental data
V.V. Zaykov, I.A. Blinov, A.M. Yuminov, D.M. Galimov, D.A. Zherebtsov,
E.V. Zaykova, M.N. Ankushev, V.M. Ryzhkov, M.A. Rassomakhin, I.A. Yusupov
The results of gold melt infuence on platinoid microinclusions in ancient gold products from the burial mounds of the Urals and Phanagoria are compared with the experimental data. The experiment was conducted with gold particles from placers of the South Urals mixed in a mufe furnace with ruthenium grains at temperature of 1100 °C. The composition varies identically in both cases resulted in the formation of weakly and intensely altered microparticles with lower Os content. Three poorly and fve intensively altered microinclusions were identifed in ruthenium from gold products of the Urals. In osmium from the gold leaf of Phanagoria, the proportion between these inclusions is 3:10. As a result of the experiment, it was established that secondary microinclusions ith lower Os content are formed in gold melt along the periphery of the ruthenium grains. The comparison with microinclusions from ancient gold products from the other regions shows no efect in thin (10–30 μm) foil from the Altai products, which are a result of amalgamation.
Figures 15. Tables 7. References 27.
Key words: platinoids, ruthenium, osmium, iridium, gold products, placers, experiment, Urals, Phanagoria.
МINERALOGY № 3 2017