Mineralogy, Geochemistry, and Origin of Buyukmahal Manganese Mineralization in the Artova Ophiolitic Complex, Yozgat, Turkey

Öksüz, Nursel; Okuyucu, Neslihan

doi:10.1155/2014/837972

Cited by 14 publications

(4 citation statements)

References 28 publications

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“…Manganese metal and its alloys play a significant role in various industrial sectors including, metallurgical, non-metallurgical and steel industries; however, there is considerable controversy about its origin (e.g., Magaritz and Brenner 1979;Shah and Moon 2007;Oksuz 2011;Öksüz and Okuyucu 2014). Manganese addition enhances the forging qualities of steel, the steel strength, durability, stiffness, hardness; it also improves the wearing resistance and hardenability of the steel structures.…”

Section: Introductionmentioning

confidence: 99%

Geochemistry and origin of Mn deposits in the Bela ophiolite complex, Balochistan, Pakistan

Narejo

Shar

Fatima

et al. 2019

J Petrol Explor Prod Technol

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We have studied geochemical characteristics, mineralogy and origin of the manganese deposits in Bela ophiolitic complex. Geochemical investigation was conducted in order to discuss the elemental correlations and to infer the probable origin of manganese deposits in Bela ophiolites. Ore microscopy was conducted to identify different manganese minerals and their paragenesis. Psilomelane and braunite were found to be the major ore minerals. Mineral paragenesis sequence as observed was braunite forming first. Psilomelane formed in later stages because it has been found that psilomelane is altering the braunite. Magnetite was observed as a secondary mineral as vein filling and cutting through both the braunite and psilomelane, therefore, younger than the psilomelane and braunite. The gangue minerals observed in the studied samples were quartz, cryptocrystalline silica and calcite. The correlations among different major and trace elements showed diversity of relations. MnO showed negative correlation with Fe 2 O 3 (− 0.73), Si 2 O (− 0.27), positive correlation with Al 2 O 3 (0.54), TiO 2 (0.36), MgO (0.22), Pb (0.23), Ni (0.07), Cr (0.12), and no correlation was established with Zn, Cu, Co. Binary diagram of Si versus Al and ternary discrimination diagrams of Fe-(Ni + Co + Cu) × 10-Mn and Ni-Zn-Co showed hydrothermal-diagenetictype deposits. Furthermore, the present study suggests that the enriched manganiferous fluid during its upward movement within the Tethys oceanic crust near spreading center started precipitating Mn along with Fe on the sea floor. Later on, these manganese minerals were obducted on land between Indian plate and Helmond block of Eurasian plate in existing position accompanying pillow basalt and pelagic sediments.

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Section: Introductionmentioning

confidence: 99%

Geochemistry and origin of Mn deposits in the Bela ophiolite complex, Balochistan, Pakistan

Narejo

Shar

Fatima

et al. 2019

J Petrol Explor Prod Technol

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“…It is known that both deposits in the study area were rapidly deposited from hydrothermal solutions and are consistent with hydrothermal exhalative manganese deposits in modern spreading centers and formed in distal parts of spreading centers (Öksüz, 2011b). Moreover, data from this study indicates that pyrolusites in the Eymir area have higher Mn content and lower Fe content which might indicate that the deposit at Derbent is closer to the spreading center (Öksüz, 2011a, b;Öksüz and Okuyucu 2014).…”

Section: Resultsmentioning

confidence: 78%

Derbent-Eymi̇r Bölgesi̇nde (Yozgat, Türki̇ye) Artova Ofi̇yoli̇ti̇k Karmaşiğindaki̇ Manganez Yataklarindan Mi̇neraloji̇k Bulgular

Öksüz¹

2017

Maden Tetkik Ve Arama Dergisi

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The Artova Ophiolitic Complex (AOC), which formed in association with Alpine Ophiolites, is exposed in the NE part of central Anatolia, in the interior of the central Black Sea region and within the borders of Çorum and Yozgat. The Derbent-Eymir manganese-oxide deposit under investigation occurs within this ophiolitic complex. The mineral association in Derbent ore is composed chiefl y of pyrolusite, manganite and lesser amounts of ramsdellite, magnetite and goethite. Calcite is the main gangue mineral. The mineral association in Eymir ore is represented by pyrolusite, braunite, neltnerite, jacobsite, psilomelane and trace amount of limonite accompanied by some gangue minerals such as quartz and calcite. Electron microprobe analysis was carried out on pyrolusite, braunite and psilomelane minerals. While pyrolusite from Eymir has higher Si, Al, Mn and Ca, pyrolusite from the Derbent ore has lower Fe, K and Ba contents. Pyrolusite in the Eymir ore has higher Si, Al, Mn and

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“…The ophiolitic sequence in the Birjand area (east of Iran) is comprised mainly of ultramafic rocks and indicates a well-developed mid-oceanic to suprasubduction ophiolite complex of Mid-Cretaceous age (Zarrinkoub et al, 2012). The geologic context and ore-host rock relationship of this ophiolitic sequence are similar to those of the Wazirestan (Shah & Moon, 2004 in Pakistan, the Artova (Oksüz & Okuyucu, 2014) in Turkey, and the Abadeh-Tashk (Rajabzadeh et al, 2017) and Baft (Heshmatbehzadi & Shahabpour, 2010) in Iran. No investigation has been conducted on manganese deposits to the south and southeast of Birjand (South Khorasan province) so far.…”

Section: Introductionmentioning

confidence: 67%

Geological and Geochemical Investigation of Three Ophiolite‐Hosted Manganese Prospects, Southeast of Birjand, South Khorasan, East of Iran

et al. 2017

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The studied ophiolite-hosted manganese prospects are located in southeast of Birjand, South Khorasan, in the east of Iran. The manganese ores within the ophiolitic sequence in this region occur as small discrete patches, associated with radiolarian chert and shale. Manganese ores in the host rocks are recognizable as three distinct syngenetic, diagenetic, and epigenetic features. The syngenetic manganese ores occurred as bands associated with light-red radiolarian chert. The diagenetic Mn ores occurred as lenses accompanied by dark-red to brown radiolarian chert. The epigenetic Mn ores occurred as veins/veinlets within the green radiolarian shale. The major manganese ore minerals are pyrolusite, braunite, bixbyite, ramsdellite, and romanechite showing replacement, colloidal, and brecciated textures. The high mean values of Mn/Fe (15.32) and Si/Al (15.65), and the low mean concentration values of trace elements, such as Cu (85.9 ppm), Ni (249.9 ppm), and Zn (149 ppm), as well as the high concentration values of Si, Fe, Mn, Ba, Zn, Sr, and As in the studied manganese ores furnished sufficient evidence to postulate that the sea-floor Mn-rich hydrothermal exhalatives were chiefly responsible for the ore formation, and the hydrogenous processes had negligible role in generation of the ores. The further geological and geochemical evidence also revealed that the ores deposited on the upper parts of the ophiolitic sequence by submarine exhalatives. The intense hydrothermal activities caused leaching of elements such as Mn, Fe, Si, Ba, As and Sr from the basaltic lavas (spilites). After debouching of the sea-floor exhalatives, these elements entered the sedimentary basin. The redox conditions were responsible for separation of Fe from Mn.

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Mineralogy, Geochemistry, and Origin of Buyukmahal Manganese Mineralization in the Artova Ophiolitic Complex, Yozgat, Turkey

Cited by 14 publications

References 28 publications

Geochemistry and origin of Mn deposits in the Bela ophiolite complex, Balochistan, Pakistan

Geochemistry and origin of Mn deposits in the Bela ophiolite complex, Balochistan, Pakistan

Derbent-Eymi̇r Bölgesi̇nde (Yozgat, Türki̇ye) Artova Ofi̇yoli̇ti̇k Karmaşiğindaki̇ Manganez Yataklarindan Mi̇neraloji̇k Bulgular

Geological and Geochemical Investigation of Three Ophiolite‐Hosted Manganese Prospects, Southeast of Birjand, South Khorasan, East of Iran

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