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| Content Provider | Springer Nature Link |
|---|---|
| Author | Echmaeva, E. A. Osadchii, E. G. |
| Copyright Year | 2009 |
| Abstract | The standard thermodynamic properties (Δ$_{f}$ G°, S°, Δ$_{f}$ H°) of the following synthetic minerals and compounds in the Ag-Au-Se and Ag-Au-Te systems were determined by the EMF method: β-Ag$_{2}$Se (low-temperature naumannite), α-Ag$_{2}$Se (high-temperature naumannite), Ag$_{3}$AuSe$_{2}$ (fischesserite), AuSe, Ag$_{5}$Te$_{3}$ (stützite), Ag$_{2}$ Te (hessite), and Ag$_{3}$AuTe$_{2}$ (petzite). All minerals and compounds were produced by solid-phase synthesis from elements or electrum of the given composition in evacuated ampoules made of quartz glass. The phases were verified by X-ray diffraction analysis, microscopically in reflected light, and with an electron microprobe. The absence of the ternary compound AgAuSe in the Ag-Au-Se system was confirmed by solid-phase annealing. On the basis of experimental data on the electromotive force E versus temperature, the equations E(T) were calculated, from which the temperature-dependent relationships of the Gibbs energy in the relevant reactions and the standard thermodynamic functions of compounds within the range 300–502 K were obtained. |
| Starting Page | 247 |
| Ending Page | 258 |
| Page Count | 12 |
| File Format | |
| ISSN | 10757015 |
| Journal | Geology of Ore Deposits |
| Volume Number | 51 |
| Issue Number | 3 |
| e-ISSN | 15556476 |
| Language | English |
| Publisher | SP MAIK Nauka/Interperiodica |
| Publisher Date | 2009-07-11 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Mineral Resources |
| Content Type | Text |
| Resource Type | Article |
| Subject | Geology Economic Geology Geochemistry and Petrology |
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