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Fariba Padyar, Geological survey and mineral exploration of Iran (Islamic Republic of Iran)
Nasser Abedian, Geological survey and mineral exploration of Iran (Islamic Republic of Iran)
Behrouz Borna, Geological survey and mineral exploration of Iran (Islamic Republic of Iran)
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The paper presents the results of a study of fluid inclusions( petrography, Chemistry, Th, Td) from the gold -containing quartz in the shear zone type mineralizations from northwestern of Sanandaj-Sirjan .the recrystallization microstructure in the quartzite suggests deformation in the lower green shist facies condition with a progressively decreasing finite strain away from the thrust. The microstructures and fluid inclusion trails(Secodary) show analogous pattern and have formed during the same deformation event in the footwall.
Four types of fluid inclusion were identified in the studied materials, distinguished by shape,degree of filling of the vacuoles, and phase composition:1-aqueous 2-monophasic and biphasic containing CO2 3-aqueous solutions with CO2 4-aqueous with crystals of salt.
Total homogenization temperatures of 180-390 C0 and a maximum temperature (Td) between 350-400 C0 Salinity ranges between 2-14 Wt% equivalent .Gold is intimately disseminated in quarz , but also it is associated with Sulphides , especially Pyrite and chalcopyrite.
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