ЧИСЛОВЕ МОДЕЛЮВАННЯ УМОВ ФОРМУВАННЯ СРІБНОГО ЗРУДЕНІННЯ МУЖІЄВСЬКОГО РОДОВИЩА

Анотація

By the results of detailed mineralogical researches of Ag-Sb-base-metal ores in the
Mouzhiyevo epithermal deposit (Intracarpathian volcanic belt, Ukraine) the authors have
executed numerical modelling of the mineral-forming system at: 1) variations of the Sb
and Ag contents, 2) increase Eh of system and 3) change of salt content in a temperature
interval from 200 up to 100°С. The recalculations were carried out about use of
CHILLER software package (Reed, 1982). Is established that the minerals of boulang-
erite-pyrargyrite-polybasite-acanthite range are precipitated at hydrothermal oxidation of
mineral-forming hydrothermal solutions and/or reduction of concentration Sb and de-
crease of temperature. On the deposit silver ores have been formed in this sequence at
mixing of hydrothermal solution with meteoric waters, when the system was enriched by
antimony as a result of destruction Sb-bearing (± boulangerite) galena aggregates.