Composition of Pancarli Magmatic Ni-Cu±(PGE) Sulfide Deposit in the Cadomian-Avalonian Belt, Eastern Turkey

Esra Yildirim; Nail Yildirim; Cahit Dönmez; Kurtuluş Günay; Taner Korkmaz; Mustafa Akyildiz; Burcu Gören

doi:10.1007/s12583-020-1299-5

Volume 31 Issue 3

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Journal of Earth Science > 2020 > 31(3): 536-550.

Esra Yildirim, Nail Yildirim, Cahit Dönmez, Kurtuluş Günay, Taner Korkmaz, Mustafa Akyildiz, Burcu Gören. Composition of Pancarli Magmatic Ni-Cu±(PGE) Sulfide Deposit in the Cadomian-Avalonian Belt, Eastern Turkey. Journal of Earth Science, 2020, 31(3): 536-550. doi: 10.1007/s12583-020-1299-5

Citation:

Esra Yildirim, Nail Yildirim, Cahit Dönmez, Kurtuluş Günay, Taner Korkmaz, Mustafa Akyildiz, Burcu Gören. Composition of Pancarli Magmatic Ni-Cu±(PGE) Sulfide Deposit in the Cadomian-Avalonian Belt, Eastern Turkey. Journal of Earth Science, 2020, 31(3): 536-550. doi: 10.1007/s12583-020-1299-5

Citation:

Esra Yildirim, Nail Yildirim, Cahit Dönmez, Kurtuluş Günay, Taner Korkmaz, Mustafa Akyildiz, Burcu Gören. Composition of Pancarli Magmatic Ni-Cu±(PGE) Sulfide Deposit in the Cadomian-Avalonian Belt, Eastern Turkey. Journal of Earth Science, 2020, 31(3): 536-550. doi: 10.1007/s12583-020-1299-5

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Composition of Pancarli Magmatic Ni-Cu±(PGE) Sulfide Deposit in the Cadomian-Avalonian Belt, Eastern Turkey

doi: 10.1007/s12583-020-1299-5

1.
Firat University, Department of Geology Engineering, Elaziğ 23119, Turkey
2.
General Directorate of Mineral Research and Exploration of Turkey, Department of Mineral Research and Exploration, Ankara 06520, Turkey
3.
Çukurova University, Department of Geology Engineering, Adana, Turkey

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Corresponding author: Esra Yildirim, ORCID:0000-0002-0823-988X, eozyildirim@gmail.com
Received Date: 25 Sep 2019
Accepted Date: 17 Dec 2019
Publish Date: 01 Mar 2020

Abstract

Abstract

Pancarli Ni-Cu±(PGE) sulfide deposit occurs in the Neoproterozoic basement complex of the Bitlis massif, which is one of the Andean-type active continental margin fragments with arc-type assemblages represented by the Cadomian orogenic belt. Pancarli sulfides are associated with quartzo-feldspathic gneisses (country rock) and mafic intrusions (host rock). Composed of only semi-massive ore, the Ni-Cu±(PGE) sulfide deposit is a small-scale deposit, and it does not contain net-textured and disseminated ore. The mineral assemblage comprises pyrrhotite, pentlandite, and chalcopyrite. The semi-massive ore samples contain 2.2 wt.%-2.9 wt.% Ni, 0.8 wt.%-2.2 wt.% Cu (Cu/(Cu+Ni)=0.2-0.5) and 0.13 wt.%-0.17 wt.% Co. The Cu/Ni ratios (average 0.57) are consistent with the segregation of sulfides from a basaltic magma. Low Pt+Pd_100%S values of 0.08 ppm-0.89 ppm, relatively low Pt/Pd ratios of 0.2-1.4, and Pd/Ir ratios of 4.5-39 have also been revealed. These values demonstrate that the magma reached S saturation before its emplacement and the mineralization with high Cu/Pd ratios formed by sulfides segregated from a PGE-depleted magma. δ³⁴S isotope values (average -3.1‰) of Pancarli sulfides are lower than mantle source. Negative δ³⁴S value indicates contamination from surrounding rocks. Concerning the composition, remobilization style and magma type, the Pancarli Ni-Cu±(PGE) sulfide deposit is similar to the deposits associated with Andean-type magmatic arcs located in the convergent plate margin settings.
- Ni-Cu±(PGE) sulfide deposit,
- δ³⁴S isotopes,
- Neoproterozoic,
- Andean type,
- eastern Turkey

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References(80)

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