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    STUDIA GEOLOGIA - Issue no. 1 / 2002  
         
  Article:   IMPLICATIONS RESULTING FROM THE STUDY OF FLUID INCLUSIONS IN THE SHEAR ZONE-TYPE GOLD MINERALIZATION FROM BOZOVICI (BANAT) AND SOMESUL RECE (GILAU MOUNTAINS).

Authors:  VASILE POMÂRLEANU, IOAN MÂRZA.
 
       
         
  Abstract:  The paper presents the results of a study on fluid inclusions (petrography, chemistry, Th, Td) from the gold-containing quartz in the shear zone type mineralizations from Bozovici (Banat) and Somesul Rece (Gilau Mountains). Four types of fluid inclusions were identified: A aqueous, AS aqueous with efflorescences and crystals of nahcolite, C monophasic and biphasic containing CO2, and AC aqueous solutions with CO2. Microthermometry (Th and Td) indicated homogenisation temperatures of nahcolite between 136-2600 C, total homogenisation temperatures of 283-3900 C, and a maximum temperature (Td) between 380-4200 C. The molar content of the CO2/H2O ratio varies between 0.35 0.72; salinity ranges between 2 14 wt % equivalent. Gold is intimately disseminated in quartz (in both studied occurrences), but also it is associated with sulphides, especially pyrite (Bozovici) and chalcopyrite (Somesul Rece).  
         
     
         
         
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