STRUCTURAL, TEXTURAL, MINERALOGICAL AND GEOCHEMICAL FEATURES AND THE PATTERN OF THE ANGORAN ORE DEPOSIT IN THE SEDEX-VMS-MVT TRIANGLE

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EBRAHIMI MOHAMMAD HASSAN; AFTABI ALIJAN; MOHAMADI NIAEI RAMIN

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Journal: PETROLOGY Year:2010 | Volume:1 | Issue:3 Page(s): 1-10

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Information Journal Paper

Title

STRUCTURAL, TEXTURAL, MINERALOGICAL AND GEOCHEMICAL FEATURES AND THE PATTERN OF THE ANGORAN ORE DEPOSIT IN THE SEDEX-VMS-MVT TRIANGLE

Author(s)

EBRAHIMI MOHAMMAD HASSAN | AFTABI ALIJAN | MOHAMADI NIAEI RAMIN | Issue Writer Certificate

Keywords

ANGORANQ2

GEOCHEMISTRYQ2

ORE DEPOSITQ2

SEDEXQ3

Abstract

The Angouran Zn-Pb deposit is located about 120 Km Zanjan Province, within Sanandaj-Sirjan Zone.The deposit occurs in metamorphosed schists and marbles of Proterozoic age. The deposit contains about 4.7 Mt of sulfide ore, grading 27.7% Zn, 2.4% Pb and 110 g/t Ag and 14.6 Mt of oxidized carbonate ores, grading 22% Zn and 4.6% Pb. The Angouran SEDEX deposit formed as a result of continental rifting and exhalation of seawater hydrothermal solutions into the seafloor and syngenetic deposition of sphalerite and galen within shales and carbonates. The deposit was then metamorphosed along with schists and marbles. Supergene oxidation of sulfide minerals and redeposition and replacement of zinc and lead formed the non-sulfide carbonate ores in Quaternary period. Based on structural, textural, mineralogical and geochemical evidence such as sulfides-schists foliation in marbles and schists, elongation of pyrite and sphalerite, high grade of Zn (28%), low grade of Cu (0.014%), and the absence of space filling and vein controlled mineralization, the Angouran Zn-Pb deposit resembles the exhalative sedimentary (Sedex) deposit, rather than Mississippi valley type (MVT) or volcanogenic massive sulfide (VMS) deposit.

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APA: Copy

EBRAHIMI, MOHAMMAD HASSAN, AFTABI, ALIJAN, & MOHAMADI NIAEI, RAMIN. (2010). STRUCTURAL, TEXTURAL, MINERALOGICAL AND GEOCHEMICAL FEATURES AND THE PATTERN OF THE ANGORAN ORE DEPOSIT IN THE SEDEX-VMS-MVT TRIANGLE. PETROLOGY, 1(3), 1-10. SID. https://sid.ir/paper/196907/en

Vancouver: Copy

EBRAHIMI MOHAMMAD HASSAN, AFTABI ALIJAN, MOHAMADI NIAEI RAMIN. STRUCTURAL, TEXTURAL, MINERALOGICAL AND GEOCHEMICAL FEATURES AND THE PATTERN OF THE ANGORAN ORE DEPOSIT IN THE SEDEX-VMS-MVT TRIANGLE. PETROLOGY[Internet]. 2010;1(3):1-10. Available from: https://sid.ir/paper/196907/en

IEEE: Copy

MOHAMMAD HASSAN EBRAHIMI, ALIJAN AFTABI, and RAMIN MOHAMADI NIAEI, “STRUCTURAL, TEXTURAL, MINERALOGICAL AND GEOCHEMICAL FEATURES AND THE PATTERN OF THE ANGORAN ORE DEPOSIT IN THE SEDEX-VMS-MVT TRIANGLE,” PETROLOGY, vol. 1, no. 3, pp. 1–10, 2010, [Online]. Available: https://sid.ir/paper/196907/en

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