نوع مقاله : مقاله پژوهشی
نویسندگان
گروه زمین شناسی اقتصادی، دانشکده علوم پایه، دانشگاه تربیت مدرس، تهران، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The Chah-Farsakh copper deposit is located in the Torud-Chahshirin metallogenic belt and formed in the Proterozoic-early Cambrian volcanic-sedimentary sequence. Mineralization occurred in the form of a sulfide horizon in the meta-volcanic rocks. It is formed less frequently in the hanging wall units of meta-volcanics, including the muscovite- quartz schist, the meta-sandstone, the tuffaceous sandstone, and the marble units. The main minerals in the deposit include chalcopyrite, pyrite, sphalerite magnetite, tetrahedrite, tennantite and bornite, respectively, and the secondary minerals include covellite and chalcocite, and the most abundant gangue minerals are quartz and calcite. Based on the orebody structure, mineralogy, and ore textures, we recognize tree different ore facies types in the Chah-Farsakh deposit: (1) stockwork/feeder zone; (2) massive ore facies; and (3) bedded ore facies. Siliceous and carbonate alterations are the main alterations associated with mineralization. Banded, disseminated, replacement, massive, veins-veinlets are main ore-bearing textures in this deposit According to fluids inclusion studies on the quartz minerals of the stringer zone, the average homogenization temperature of the fluids inclusions is 355 °C and the salinity is 6 to 16% NaCl. According to geological studies, mineralogy, structure and texture and fluids inclosions the Chah-Farsakh deposit is formed in the submarine volcanic activity environment and this deposit shows most similarities with the Besshi-type VMS mineralization.
کلیدواژهها [English]
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