Ph.D. Tezi Görüntüleme | |||||||||||||||||||||
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Summary: into NE-SW trending and NW dipping, and also about EW trending and North dipping fractures within the Eocene aged Alibaba Formation. The main mineralizations have developed along a N70E trending fracture zone in Kuzdağı Sırtı area. Ore-bearing silicaveins exhibit 0.1-0.3 m thicknesses and do not show continuity in the field. Cavity-filling and banded structures are widely observed in mineralizations. The main ore minerals consist ofgalena, sphalerite, pyrite, chalcopyrite and tetrahedrite, and also trace amounts of gold. Mineral chemistry analyses indicate that pyrite contains low Co and Ni values, Zn displaysa negative correlation with Cu and Fe in chalcopyrites, Fe behaves similarly with Cd and Mn in sphalerites and there is an ion exchange between Zn and Fe. In addition, it wasdetermined that all fahlerz minerals are tetrahedrite in composition and silver does not exist in galenas except tetrahedrites.Quartz, sericite, K-Feldspar, kaoline, Fe chlorite, albite, Mg chlorite and epidote are most common alteration minerals from ore towards wall rock. Zr, Hf, Nb, Al and Ti areimmobile elements in the profiles that laid out along a line perpendicular to the vein. Relative (%) and net (g/100g) mass change calculations done considering these immobileelements indicated mass gains in 1, 3 and 5 numbered profiles, mass losses in 2 and 4 numbered profiles.in quartz and 90°C -133°C in sphalerites. In NaCl±KCl±MgCl2-H2O system, ore-forming fluids have salinities between 0.7 and 12.4 wt. % NaCl eq and densities between 0.79 and 0.97 g/cm3. These values reveal that minerilazations were generated in an epithermal system. Sulphurisotope analysis results obtained from pyrite, galena and sphalerite minerals are between - 1.2 ‰ and 3 ‰, marking magmatic origin for sulphur. The average heat of formation washydrogen isotope values are between 15.0 ‰-16.7 ‰ and -87 ‰ -91 ‰, respectively. Inclusions, Stable isotope |