Инд. авторы:	Palyanova G.A., Mikhlin Y.L., Karmanov N.S., Kokh K.A., Seryotkin Y.V.
Заглавие:	Visible and “invisible” forms of gold and silver in the crystallization products of melts in the Fe–S–Ag–Au system: experimental data
Библ. ссылка:	Palyanova G.A., Mikhlin Y.L., Karmanov N.S., Kokh K.A., Seryotkin Y.V. Visible and “invisible” forms of gold and silver in the crystallization products of melts in the Fe–S–Ag–Au system: experimental data // Doklady Earth Sciences. - 2017. - Vol.474. - Iss. 2. - P.636-640. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X1706006X; РИНЦ: 31071790; SCOPUS: 2-s2.0-85024090634; WoS: 000405705400006;
Реферат:	eng: The forms of Au and Ag occurrence in the crystallization products of melts in the Fe–S–Ag–Au system depending on the proportions of Fe/S and Ag/Au have been studied at (Fe + S)/(Ag + Au) = 0.1. It is shown that the S-rich systems with S/Fe = 2 contain Au–Ag sulfides and Au–Ag alloys. The systems depleted in S with S/Fe = 1 contain only Au–Ag alloys. The results of XPS provide evidence for the sulfide and metallic components of Au and Ag among the crystallization products of melts in the system studied at S/Fe = 2 and a metallic component with S/Fe = 1. According to the data of electron microprobe analysis, the content of “invisible” forms of noble metals in pyrite and pyrrhotite is < 0.024 wt % for Au and <0.030 wt % for Ag; the contents of “invisible” Au and Ag in troilites are 0.040 ± 0.013 wt % Au and 0.079 ± 0.016 wt % Ag. © 2017, Pleiades Publishing, Ltd.
Ключевые слова:	Gold and silver; Metallic component; Silver; crystallization; experimental study; gold; pyrite; pyrrhotite; troilite; silver; Ag-alloy; Silver alloys; Microanalysis; Electron probe microanalysis; Crystallization products;
Издано:	2017
Физ. характеристика:	с.636-640