THE ARPACHAY MINERALIZATION OCCURRENCE, NORTH OF TAKAB: AN EPITHERMAL BASE METAL MINERALIZATION IN THE TAKAB-ANGOURAN-TAKHT-E-SOLEYMAN METALLOGENIC ZONE

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TALEBI L.; MOKHTARI M.A.A.; EBRAHIMI M.; KOUHESTANI H.

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Journal: GEOSCIENCES Year:2017 | Volume:26 | Issue:104 Page(s): 281-296

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Title

THE ARPACHAY MINERALIZATION OCCURRENCE, NORTH OF TAKAB: AN EPITHERMAL BASE METAL MINERALIZATION IN THE TAKAB-ANGOURAN-TAKHT-E-SOLEYMAN METALLOGENIC ZONE

Author(s)

TALEBI L. | MOKHTARI M.A.A. | EBRAHIMI M. | KOUHESTANI H. | Issue Writer Certificate

Keywords

PB-ZN-CU MINERALIZATIONQ1

EPITHERMAL BASE METAL DEPOSITSQ1

ARPACHAYQ1

TAKAB-ANGOURAN-TAKHT-E-SOLEYMANQ1

Abstract

Arpachay PB-ZN-CU MINERALIZATION occurrence is located in the TAKAB-ANGOURAN-TAKHT-E-SOLEYMAN metallogenic zone, 60 km north of Takab. Rock units exposed in the area consist of Oligo-Miocene volcanic, volcano-sedimentary and sedimentary units which are intruded by gabbroic and granodioritic plutons. Mineralization occurs as ore-bearing quartz veins hosted by gabbroic pluton in this area. The gabbro shows hetero-granoular texture consisting of plagioclase and clinopyroxene phynocrysts. Geochemical data indicate a calc-alkaline affinity for the gabbroic rocks, associated with active continental margin. These data demonstrate contamination of the parental magma with crustal materials. Based on microscopic studies, ore minerals include galena, sphalerite, chalcopyrite with minor pyrite, and quartz and calcite are present as gangue minerals in the Arpachy occurrence. The ore minerals show vein-veinlets, disseminated, breccia, open space filling, box-work, plumose, cockade and replacement textures. Hydrothermal alteration is restricted to the silicified, sericitic-argillitic and carbonatic altered parts of the ore zones., Alteration occurs as sericitization and calcitization-chloritization (propylitic alteration) of host gabbro. Four stages of mineralization can be distinguished at the Arpachy occurrence. These stages are progressed from brecciation and silicification of host rocks (stage 1) to quartz-chalcopyrite-pyrite‒cemented veins and breccias (stage 2), quartz-galena-sphalerite veins and veinlets (stage 4) and finally individual or sets of late barren quartz-carbonate veins and veinlets (stage 4) in the outer parts of the mineralization zones. REE pattern of the host rocks and the mineralized samples indicate that mineralized samples are depleted in REE. This signature may indicate high water/rock interaction at ARPACHAY. Geological, mineralogical and textural characteristics of ARPACHAY occurrence are comparable with intermediate-sulfidation style of EPITHERMAL BASE METAL DEPOSITS.

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APA: Copy

TALEBI, L., MOKHTARI, M.A.A., EBRAHIMI, M., & KOUHESTANI, H.. (2017). THE ARPACHAY MINERALIZATION OCCURRENCE, NORTH OF TAKAB: AN EPITHERMAL BASE METAL MINERALIZATION IN THE TAKAB-ANGOURAN-TAKHT-E-SOLEYMAN METALLOGENIC ZONE. GEOSCIENCES, 26(104 ), 281-296. SID. https://sid.ir/paper/32670/en

Vancouver: Copy

TALEBI L., MOKHTARI M.A.A., EBRAHIMI M., KOUHESTANI H.. THE ARPACHAY MINERALIZATION OCCURRENCE, NORTH OF TAKAB: AN EPITHERMAL BASE METAL MINERALIZATION IN THE TAKAB-ANGOURAN-TAKHT-E-SOLEYMAN METALLOGENIC ZONE. GEOSCIENCES[Internet]. 2017;26(104 ):281-296. Available from: https://sid.ir/paper/32670/en

IEEE: Copy

L. TALEBI, M.A.A. MOKHTARI, M. EBRAHIMI, and H. KOUHESTANI, “THE ARPACHAY MINERALIZATION OCCURRENCE, NORTH OF TAKAB: AN EPITHERMAL BASE METAL MINERALIZATION IN THE TAKAB-ANGOURAN-TAKHT-E-SOLEYMAN METALLOGENIC ZONE,” GEOSCIENCES, vol. 26, no. 104 , pp. 281–296, 2017, [Online]. Available: https://sid.ir/paper/32670/en

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