Volume 11, Issue 1 (Spring & Summer 2025)
KJES 2025, 11(1): 220-240 |
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Saki A, Eskandarnia P, Zarasvandi A, Malohi N. Formation of magnetite as a key indicator for understanding the physicochemical conditions of porphyry Cu ـ Mo deposit formation: A case study from the Meiduk porphyry deposit in Kerman Province, southeastern Urumieh-Dokhtar zone. KJES 2025; 11 (1) :220-240
URL: http://gnf.khu.ac.ir/article-1-2939-en.html
URL: http://gnf.khu.ac.ir/article-1-2939-en.html
1- Shahid Chamran University of Ahvaz , adel_saki@yahoo.com
2- Lorestan University
3- Shahid Chamran University of Ahvaz
2- Lorestan University
3- Shahid Chamran University of Ahvaz
Abstract: (201 Views)
The Meiduk porphyry Cu ـ Mo deposit is located in the southern part of the Urumieh–Dokhtar magmatic arc within the Cenozoic magmatic belt of Kerman, Iran. Due to the widespread occurrence of magnetite as a minor phase in potassic and phyllic alteration zones, this deposit provides a suitable context for geochemical investigations. In this study samples were analyzed using Electron Probe Micro-Analyzer (EPMA) to assess the physicochemical conditions of magnetite formation. Elemental data indicate that the magnetites are predominantly of hydrothermal origin, characterized by high Ti and V and relatively low Al and Mn contents. These compositions suggest formation temperatures of 200–300°C. The chemical composition, especially Ti/V ratios and trace element distributions such as Co, Ni, and Cr, effectively distinguishes between magmatic and hydrothermal magnetites. Geochemical plots confirm that the studied magnetites fall within the porphyry field. Petrographic evidence, including the occurrence of magnetite in association with sulfide minerals such as chalcopyrite and pyrite, strongly supports the geochemical findings. This study highlights the potential of magnetite chemistry as a powerful tool for deciphering ore-forming processes in porphyry systems and demonstrates its applicability in exploration and modeling of concealed or deep-seated mineral deposits.
Type of Study: Original Research |
Subject:
Economic Geology
Received: 2025/05/6 | Accepted: 2025/08/27 | Published: 2025/09/21
Received: 2025/05/6 | Accepted: 2025/08/27 | Published: 2025/09/21
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