Geology of the Yeşilyurt gold deposit: an example of low-angle normal fault related mineralization, Eastern Anatolia-Turkey

Indexed In

Volume 164 / 2021

Authors:

Esra YILDIRIM, Nail YILDIRIM, Cahit DÖNMEZ, Kurtuluş GÜNAY

Keywords:

Yeşilyurt gold mineralization, Detachment fault/Lowangle normal fault, Fault gauge, Cataclasite, Breccia.

Abstract:

Yeşilyurt gold mineralization is located within the provincial borders of Malatya and Adıyaman in the East Anatolian Region. This mineralization is one of the gold deposits which correlated with low-angle  normal/detachment  fault.  Low-angle  normal  fault  associated  with  a  tectonic setting which  is  potential  extensional  in  Paleogene-Neogene  (?)  term.  Marble-recrystallized limestone which belongs to the metamorphic core is the dominant rock (footwall) type in the bottom plate of the fault zone. There are deformed graphitic calc-schists (hanging wall) in the upper plate of the fault zone. The fault zone is characterized by fault gauge, cataclasite, and breccia. While the cataclasite, and breccia are the principal ore host, there is weaker mineralization in fault gauge. Alteration assemblages are: (1) silica replacements/veinlets and, (2) quartz-pyrite replacements / veinlets. High gold contents are closely related to silicification and quartz-pyrite alteration which damaged the primary textures. Small volume syn-tectonic magmatic rocks are simultaneous and typically monitored in the silicified areas which are border on the high-grade gold mineralization. Mineralization is a non-base metalliferous Au depositthat contains Au/Ag ~ 1.07, As (~0.27%), F (1.59%), and a trace amount of Sb. This deposit will lead to finding new gold deposits in Eastern Taurus Orogenic Belt.

https://doi.org/10.19111/bulletinofmre.797729

DOI:

https://doi.org/10.19111/bulletinofmre.797729