The occurrence of newly formed minerals in acidic environment and dry-arid climate, case study: low-grade dump of Miduk copper mine

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Shahhosseini Majid; dolati ardejani Faramarz; AMINI MEHDI; ebrahimi lona

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2020 | Volume:28 | Issue:1 Page(s): 159-170

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Title

The occurrence of newly formed minerals in acidic environment and dry-arid climate, case study: low-grade dump of Miduk copper mine

Author(s)

Shahhosseini Majid | dolati ardejani Faramarz | AMINI MEHDI | ebrahimi lona | Issue Writer Certificate

Keywords

newly formed mineralsQ1

pyrite oxidationQ1

iIron sulphateQ1

Raman SpectroscopyQ1

copper low-grade dumpQ1

Abstract

Newly minerals could be formed as a result of oxidation, hydrolysis, precipitation and dehydration processes in acid mine drainage (AMD) environment. The occurrence of secondary minerals within the dump No. 7 from Miduk copper mine was studied using mineralogical approaches including X-ray diffraction (XRD), Scanning Electron Microscope (SEM-EDS) and Raman Spectroscopy (RS). Geochemical invetigations, including saturation index and speciation, were conducted on pore water of the dump which simulated from paste pH test. Acidic pH value (ranges from 1. 47 to 4. 23), a high concentration of SO42-(ranges from 3. 95 to 286 g/L) and a high level of Fe (varies from 120. 9 to 70860 mg/L) of the waste leached indicate that sulphide oxidation especially pyrite occurs within the dump. Complex FeSO4+ was dominant species of ferric iron in the leached solution phase. According to mineralogical and geochemical studies, newly formed minerals including coquimbite, ferricopiapite, plumbojarosite, rozenite, alunogen and brochantite were identified within the dump. Retention of As, Pb and Cu by iron sulphate, especially coquimbite, were confirmed in the dump. The results of the present study could be employed to develop a comperehensive environmental management program at the mining sites.

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APA: Copy

Shahhosseini, Majid, dolati ardejani, Faramarz, AMINI, MEHDI, & ebrahimi, lona. (2020). The occurrence of newly formed minerals in acidic environment and dry-arid climate, case study: low-grade dump of Miduk copper mine. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 28(1 ), 159-170. SID. https://sid.ir/paper/357818/en

Vancouver: Copy

Shahhosseini Majid, dolati ardejani Faramarz, AMINI MEHDI, ebrahimi lona. The occurrence of newly formed minerals in acidic environment and dry-arid climate, case study: low-grade dump of Miduk copper mine. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2020;28(1 ):159-170. Available from: https://sid.ir/paper/357818/en

IEEE: Copy

Majid Shahhosseini, Faramarz dolati ardejani, MEHDI AMINI, and lona ebrahimi, “The occurrence of newly formed minerals in acidic environment and dry-arid climate, case study: low-grade dump of Miduk copper mine,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 28, no. 1 , pp. 159–170, 2020, [Online]. Available: https://sid.ir/paper/357818/en

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