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SUNGUN PORFİRİ BAKIR YATAĞINDA (İRAN) SIVI KAPANIMI MİKROTERMOMETRESİNE DAYALI ALTERASYON ZONU İNCELEMELERİ

Journal Name:

  • Maden Tetkik ve Arama Dergisi

Publication Year:

  • 2010

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
The Sungun porphyry copper deposit is located in East Azerbaijan, NW of Iran. The porphyries occur as stocks and dikes ranging in composition from quartz monzodiorite to quartz monzonite. Four types of hypogene alteration are developed; potassic, phyllic, propylitic and argillic. Three types of fluid inclusions are typically observed at Sungun; (1) vapor-rich, (2) liquid-rich and (3) multi-phase. Halite is the principal solid phase in the latter. The primary multiphase inclusions within the quartz crystals were chosen for micro-thermometric analyses and considered to calculate the geological pressure and hydrothermal fluid density. In potassic zone, the average of homogenization temperature is 413.6°C while in phyllic alteration, 375.9 °C. As expected in potas-sic alteration, the temperature of hydrothermal solutions is higher than that in phyllic zone. The salinity of the hydrothermal fluids has a high coherency with homogenization temperature, so the average of salinity in potassic samples is 46.3 (wt% NaCl) which is higher than phyllic samples. Based on the location of potassic alte¬ration, as expected, the lithostatic pressure is much more than the phyllic one. Finally, the average density of hydrothermal fluids in the potassically altered samples is 1.124 (gr/cm3) which is higher than the ones in phyllic zone (1.083 gr/cm3).
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Abstract (Original Language): 
Sungun bakır porfiri yatakları iran'ın kuzeybatısında, Doğu Azerbaycan'da yer almaktadır. Porfiriler kuvars monzodiyoritten kuvars monzonite kadar değişen stoklar ve dayklar olarak oluşmuştur. Dört hipojen alterasyon tipi gelişmiştir: Potasik, fillik, propilitik ve arjilik. Sungun'da tipik olarak üç sıvı kapanımı tipi görülür: (1) buhar-zengini, (2) sıvı zengini ve (3) çok fazlı. Kayatuzu en sonuncuda ana katı fazdır. Kuvars kristalleri içindeki birin¬cil çok fazlı kapanımlar mikro-termometre analizleri için seçilmiş ve jeolojik basınç ve hidrotermal akışkan yoğun¬luğunu hesaplamak için dikkate alınmışlardır. Potasik zonda, ortalama homojenleşme sıcaklığı 413.6 °C iken fillik alterasyonda 375.9 °C'dir. Potasik alterasyonda beklendiği gibi, hidrotermal çözeltiler sıcaklığı fillik zonlarda görülenden daha fazladır. Hidrotermal çözeltilerin tuzluluğu homojenleştirilmiş sıcaklıkla yüksek kohezyonludur, böylece potasik örneklerdeki ortalama tuzluluk, fillik örneklerden daha fazla olup 46.3'tür (NaCl ağırlık %). Potasik alterasyonun lokasyonuna bağlı olarak, beklendiği gibi, litostatik basınç fillik olandan daha fazladır. Sonuç olarak, potasik olarak altere olmuş örneklerdeki hidrotermal akışkanların ortalama yoğunluğu1.124 (gr/cm3)'dir ki bu değer fillik zonda bulunanların değerinden (1.083 gr/cm3) daha fazladır.
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