Hasangazi (Ulukışla - Niğde) bakır oluşumlarının jeokimyasal incelenmesi
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2015
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Niğde Üniversitesi / Fen Bilimleri Enstitüsü
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Abstract
Bu yüksek lisans tez çalışmasında Ulukışla (Niğde) havzasında yer alan Hasangazi köyü kuzeybatısındaki bakır cevherleşmesi konu edilmiştir. Bakır cevherleşmesi eski Hasangazi köyünün yaklaşık 1,5 km batı kesiminde yer almaktadır. Bakır cevherleşmesi Ulukışla volkanikleri eteklerinde bulunan volkanik breşler içerisinde yer almaktadır. Parlak kesitler üzerinde yapılan SEM - EDX analizlerinde, bakır cevher mineralleri olarak nabit bakır ve kalkozin tespit edilmiştir. Cevher minerallerinin alterasyonu sonucu malahit ve azurit yaygın olarak bulunmaktadır. Kayaçlardaki genel doku porfirik olarak belirlenmiş olup bununla birlikte intersertal ve mikrolitik dokuda gözlenmektedir. Kesitlerde yapılan mineralojik incelemede tespit edilen mineraller ve alterasyon çeşitleri: Plajiyoklaz, biyotit, kalsit, kuvars, barit, klinopiroksen, zirkon, volkanik cam, opak mineraller ve bu minerallerin alterasyonu sonucu meydana gelen; serisitleşme, karbonatlaşma ve opaklaşma tespit edilmiştir. Jeokimyasal analizler sonucu elde edilen K2O - SiO2 ikili diyagramına göre bakır cevherleşmesinin içerisinde yer aldığı volkanik kayaçlar yüksek K’lu kalk - alkali ve alkali kayaç özelliği göstermektedir. İnce kesitlerde ve SEM - EDX çalışmasında yoğun olarak görülen baritin ekonomik bir seviyeye ulaşabileceğini göstermiştir.
The copper mineralization in the NW of the Hasangazi village located in Ulukışla (Nigde) basin was studied in this master thesis. Copper mineralization is located approximately 1.5 km from the western part of the old Hasangazi village. Copper mineralization is located in volcanic breccia in foothills of the Ulukışla volcanics. Native copper and chalcocite minerals were identified as copper ore minerals in SEM - EDX analysis made on polished sections. Malachite and azurite are commonly found as a result of the alteration of ore minerals. The general texture of the rocks is identified as the porphyritic and intersertal and microlitic textures are also observed. The identified minerals and alteration types in the mineralogical examination of thin sections: plagioclase, biotite, calcite, quartz, barite, clinopyroxene, zircon, volcanic glass, opaque minerals and as a result of the alteration of these minerals; sericitization, carbonation and opacification were occurred. According to the K2O - SiO2 binary diagram obtained as a result of geochemical analysis, volcanic rocks where the copper mineralization located show high K alkaline and calc alkaline characteristics. The intense barite seen in thin sections and SEM - EDX studies show that it can reach an economic level.
The copper mineralization in the NW of the Hasangazi village located in Ulukışla (Nigde) basin was studied in this master thesis. Copper mineralization is located approximately 1.5 km from the western part of the old Hasangazi village. Copper mineralization is located in volcanic breccia in foothills of the Ulukışla volcanics. Native copper and chalcocite minerals were identified as copper ore minerals in SEM - EDX analysis made on polished sections. Malachite and azurite are commonly found as a result of the alteration of ore minerals. The general texture of the rocks is identified as the porphyritic and intersertal and microlitic textures are also observed. The identified minerals and alteration types in the mineralogical examination of thin sections: plagioclase, biotite, calcite, quartz, barite, clinopyroxene, zircon, volcanic glass, opaque minerals and as a result of the alteration of these minerals; sericitization, carbonation and opacification were occurred. According to the K2O - SiO2 binary diagram obtained as a result of geochemical analysis, volcanic rocks where the copper mineralization located show high K alkaline and calc alkaline characteristics. The intense barite seen in thin sections and SEM - EDX studies show that it can reach an economic level.
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Ulukışla Havzası, Bakır Cevherleşmesi, SEM-EDX, Porfirik, Jeokimya, Ulukışla (Nigde) Basin, Copper Mineralization, Porphyritic, Geochemistry
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Kocaöz, T.F. (2015). Hasangazi (Ulukışla - Niğde) bakır oluşumlarının jeokimyasal incelenmesi. (Yüksek Lisans Tezi). Niğde Ömer Halisdemir Üniversitesi, Fen Bilimleri Enstitüsü, Niğde
