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Upper Cretaceous carbonate hosted zinc–lead–barite deposits in Northern Thrust Zone, northern Iraq: petrography and geochemistry

Authors
  • Awadh, Salih M.1
  • Habib, Habib R.1
  • Al-Bassam, Khaldoon S.2
  • 1 University of Baghdad, Earth Sciences Department, College of Science, Baghdad, Iraq , Baghdad (Iraq)
  • 2 State Company of Geological Survey and Mining, Baghdad, Iraq , Baghdad (Iraq)
Type
Published Article
Journal
Arabian Journal of Geosciences
Publisher
Springer-Verlag
Publication Date
Jun 27, 2008
Volume
1
Issue
1
Pages
75–85
Identifiers
DOI: 10.1007/s12517-008-0006-0
Source
Springer Nature
Keywords
License
Yellow

Abstract

Zinc–lead–barite deposits located in Lefan and Lower Banik localities of about 25 km northeast of Zakho City, Northern Iraq consist of a group of strata-bound sulfides hosted in Upper Cretaceous (Upper Campanian–Maastrichtian) dolomitic limestone. Carbonate-hosted ores contain 3.77% Zn, 2% Pb, and 5% Fe, while in lower Banik, they contain 1.5% Zn, 0.37% Pb, and 1.4% Fe. Diagenetic processes, such as dolomitization and recrystalization in addition to the type of microfacies, provided appropriate physical and chemical conditions that permitted the passage of ore-bearing fluids and participated in precipitation and ore localization. These deposits are precipitated in a platform and developed within the Foreland Thrust Belt. Ore precipitated as infill of intergranular dolomite porosity with replaced dolomite and rudist shells forming disseminated crystals that occupy intergranular pore spaces around dolomite and calcite and as infill of dissolution spaces and fractures.

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