THE MINERALOGY AND CRYSTALLIZATION PROCESSES OF THE BULANCAK SULPHIDE VEINS

Yıl 1980, Cilt: 93-94 Sayı: 93-94, 1 - 2, 01.10.1980

Ömer T. Akıncı

Öz

Ore microscopy, X-ray diffraction and electron microprobe studies and chemical analyses of the vein samples collected from the rocks of the lower basic and dacitic series of the Eastern Pontid Volcanism to the south of Bulancak, Giresun led to the discovery and identification of ore minerals such as betekhtinite and aikinite for the first time in Turkey and idaite and tennantite which were not previously reported from the area. Ore microscopy studies of the ganque and ore minerals carried out together with fluid inclusion study, showed lateral temperature zonation and mineralization through oxide-sulphate-sulphide and carbonate stages. History of mineralization along with general characteristics of the veins affected by temperature and physicochemical conditions are discussed and the optical, structural and textural properties of the ore and ganque minerals are given.

Anahtar Kelimeler

THE MINERALOGY, CRYSTALLIZATION PROCESSES, THE BULANCAK

BULANCAK SÜLFİT DAMARLARININ MİNERALOJİSİ VE KRİSTALLEŞME İŞLEMLERİ

Öz

 Giresun Bulancak ilçesi güneyindeki alt bazik ve dasitik seri kayaçlar içinde yer alan damarlardan toplanan
numunelerin cevher mikroskopisi, X ışınları, elektron mikroprobla araştırılması ve kimyasal analizleri, betektinit
ve aikinit gibi minerallerin Türkiye'de ilk defa bulunmasına, ayrıca idait ve tennantit gibi yörede varlığı bilinmeyen minerallerin
tanınmasına yol açmıştır.
Cevher ve gang minerallerinin mikroskop çalışmaları sıvı kapanım çalışmaları ile birlikte yürütülmüş ve bunun
sonucu oksit-sülfat-sülfit ve karbonat şeklinde sıralanan mineral oluşumun yanal bir ısı zonlanması gösterdiği
saptanmıştır.
Isı ve fiziko-kimyasal koşullardan etkilenmiş olan cevherleşmelerin tarihçesi ve damarların genel karakteristikleri
münakaşa edilerek, cevher ve gang minerallerinin optik, yapısal ve dokusal özellikler verilmiştir. 

Anahtar Kelimeler

BULANCAK, SÜLFİT DAMARLARI, MİNERALOJİSİ VE KRİSTALLEŞME

Kaynakça

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