| Autor: |
Chovan, Martin, Mikuš, Tomáš, Prcúch, Ján, Bača, Boris |
| Předmět: |
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| Zdroj: |
Acta Geologica Slovaca; 2021, Vol. 13 Issue 2, p191-198, 8p |
| Abstrakt: |
An interesting assemblage of Ag-Pb-Bi±Cu-sulfosalts was found at the Bieber vein in Banská Štiavnica. Their occurrence is related to the deepest part of the vein, characterized by a high copper content and the predominance of chalcopyrite over other base metals sulfides. Rare members of lillianite series (ourayite, eskimoite and “schirmerite”) are associated with schapbachite and matildite – galena exsolutions. Berryite, arcubisite and acanthite, polybasite and unnamed phase (Cu3AgPbBi2S6) were also rarely found as inclusions in galena. Bi sulfosalts of the lillianite homologous series (ourayite, eskimoite, “schirmerite”) and schapbachite probably formed at temperatures around 350 °C. When the temperature was reduced below 215 °C, the sulfosalts were unstable and below 144 °C the solid solution exsolved to pure AgBiS2 and PbS. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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