Thermodynamic data for binary tellurides are compiled and combined with available data for sulfides and oxides to calculate phase relations among tellurides, sulfides, and oxides at low temperatures (100 degree -300 degree C). Calculated equilibria show that tellurides of Mo, Sn, Mn, and Zn are unstable with respect to corresponding sulfides and/or oxides in natural systems and that some tellurides, such as As//2Te//3, are likely to occur in nature, although they have not yet been found as minerals. The composition of electrum in equilibrium with hessite is useful as a sliding-scale indicator of the fugacity of Te//2 at relatively low The calculated phase relations explain particular associations or antipathies among ore minerals and may be used to predict other minerals which should be present at equilibrium.
|Original language||English (US)|
|Number of pages||18|
|Journal||Economic geology Lancaster, Pa.|
|State||Published - Mar 1 1988|
ASJC Scopus subject areas
- Geochemistry and Petrology