TETRAHEDRITE FROM THE DUBRAVE - DUGI DOL BARITE DEPOSITS, KREŠEVO, BOSNIA AND HERZEGOVINA
Journal Title: UNKNOWN - Year 1997, Vol 9, Issue 1
Abstract
The chemical composition of the tetrahedrite from the barite deposit Dubrave - Dugi Dol, south of the town Kreševo, Bosnia, hosted by Devonian Dolomite is as follows: (Cu10,65Ag0,073Hg0,03)10,75(Fe0,81Zn0,94)1,75(Sb3,57As0,34Bi0,004)3,91S13,00. Cation proportions are: Me2+ :Me3+ :S = 3.20:1.00:3.33. The 34S = -10.91 %o. The calculated formula is in good correspondence with the compositions of other analyzed tetrahedrites from the whole Middle Bosnian Schist Mountains. These results as those of the fluid inclusion studies of gangue minerals suggests the generation of tetrahedrites from highly homogenized, hot (190-310 C), high saline (24.2-26.3 wt% NaCl equiv.) mineralizing solutions generated by mixing of ascending deep seated upper mantle (Hg, F, Cu-bearing) and metamorphogenic lower crust (Zn, Fe, Ag, Au-bearing) fluids with descending highly evolved Upper Permian saline formation waters. The obtained data exclude the applicability of the fractional crystallization generation model.
Authors and Affiliations
Ivan Jurković Slobodan Miko
Keywords
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