Mineralogy, geochemistry, fluid inclusion and genesis of magnetite-apatite mineralization in the southwest of Hormuz Island, Iran

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Fakhri Doodoui a.; Alipour Asl m.

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Journal: Iranian Journal of Geology Year:2021 | Volume:14 | Issue:56 Page(s): 1-19

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Information Journal Paper

Title

Mineralogy, geochemistry, fluid inclusion and genesis of magnetite-apatite mineralization in the southwest of Hormuz Island, Iran

Author(s)

Fakhri Doodoui a. | Alipour Asl m. | Issue Writer Certificate

Keywords

MagnetiteQ2

ApatiteQ2

Rare earth elementsQ1

Magmatic-hydrothermalQ1

Hormuz IslandQ1

Abstract

The study area is located about 8 km south of Bandar Abbas in Hormozgan Province. This area is in the south of the Zagros folded zone and part of the Hormuz series. The late Precambrian-early Cambrian rocks comprise intercalations of rhyolite-rhyodacite lava and tuff, crystal tuff, tuffaceous shale, sandstone and evaporite layers. Iron mineralization along with Apatite are found as dike, massive, vein-veinlets and disseminated forms in tuffaceous shale and crystalline tuff rock units. Based on iron oxides and Apatite contents, mineralization can be divided into iron-oxides (mainly Magnetite), iron oxides-Apatite and Apatite types. The main ore-forming minerals include Magnetite, oligist, hematite, goethite and limonite, Apatite, and gangue minerals are calcite, quartz and clay minerals. The Hormuz Island ores have a high concentration of Rare earth elements (REE) and the total amount of REE in Apatite-rich ores is up to 3%. The geochemical studies show that a strong positive correlation between P and REE. Comparison of the chondrite-normalized REE pattern of the Hormuz Magnetite-Apatite ores with those from the Bafq-Posht-e-Badam block and the Kiruna type iron ore deposits represent genetic similarity of mineralization. The homogenization temperature in the two-phased liquid and vapor (L+V) fluids in Apatite minerals vary from 309 to 565° C (average 388° C), and salinity varies between 14. 16 to 33. 87 (20/80) wt. % NaCl. Finally, based on the field geology, mineralogy, geochemistry and fluid inclusion features, the Hormuz Magnetite-Apatite mineralization is classified in the Kiruna-type Magnetite-Apatite deposits group with Magmatic-hydrothermal origin.

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APA: Copy

Fakhri Doodoui, a., & Alipour Asl, m.. (2021). Mineralogy, geochemistry, fluid inclusion and genesis of magnetite-apatite mineralization in the southwest of Hormuz Island, Iran. IRANIAN JOURNAL OF GEOLOGY, 14(56 ), 1-19. SID. https://sid.ir/paper/372435/en

Vancouver: Copy

Fakhri Doodoui a., Alipour Asl m.. Mineralogy, geochemistry, fluid inclusion and genesis of magnetite-apatite mineralization in the southwest of Hormuz Island, Iran. IRANIAN JOURNAL OF GEOLOGY[Internet]. 2021;14(56 ):1-19. Available from: https://sid.ir/paper/372435/en

IEEE: Copy

a. Fakhri Doodoui, and m. Alipour Asl, “Mineralogy, geochemistry, fluid inclusion and genesis of magnetite-apatite mineralization in the southwest of Hormuz Island, Iran,” IRANIAN JOURNAL OF GEOLOGY, vol. 14, no. 56 , pp. 1–19, 2021, [Online]. Available: https://sid.ir/paper/372435/en

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