Geology, mineralogy and the Pb, S isotope study of the Kalkim Pb-Zn +/- Cu deposits, Biga Peninsula, NW Turkey

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AKISKA S., DEMİRELA G., Sayili S. I.

JOURNAL OF GEOSCIENCES, cilt.58, sa.4, ss.379-396, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 58 Sayı: 4
  • Basım Tarihi: 2013
  • Doi Numarası: 10.3190/jgeosci.154
  • Dergi Adı: JOURNAL OF GEOSCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.379-396
  • Anahtar Kelimeler: lead-zinc mineralization, skarn, sulphur and lead isotopes, Handeresi, Bagirkacdere, Firincikdere, EVOLUTION, GENESIS, SKARNS, CLASSIFICATION, GEOCHEMISTRY, GRANITOIDS, SOUTHERN, SULFUR, ORIGIN, RATIOS
  • Ankara Üniversitesi Adresli: Evet

Özet

Three main Pb-Zn +/- Cu deposits (Handeresi, Bagirkacdere, and Firincikdere) occur south of Kalkim in the southeastern part of the Biga Peninsula (NW Turkey). Massive and disseminated Pb-Zn mineralization consists of ore veins in fault zones and replacement bodies in carbonate layers in metamorphic rocks. Garnet (similar to Ad(64)Gr(36)), pyroxene (similar to Di(30)Hd(45)Jo(25)), epidote and rare tremolite-actinolite are found as gangue minerals in ore zones. The garnets often show oscillatory zoning and correspond to grossular, andradite and grandite in composition. The pyroxene minerals are manganiferous hedenbergite, johannsenite and diopside. The Mn/Fe ratios of the pyroxene range between 0.3 and 0.9 (mean 0.5). Such compositions of the garnet and pyroxene and gangue assemblages are typical of distal Pb-Zn skarns. The ore minerals are pyrite, sphalerite, chalcopyrite, galena, magnetite, hematite, and arsenopyrite.