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Paper Information

Journal:   GEOCHEMISTRY   SPRING 2014 , Volume 3 , Number 1; Page(s) 411 To 418.
 
Paper: 

INVESTIGATION ON MANGANESE MINERALIZATION ASSOCIATED WITH OPHIOLITE COLORED MELANGES FROM BASHAGARD AND RUDAN AREAS, HORMOZGAN PROVINCE BY USING MINERALOGICAL AND GEOCHEMICAL DATA

 
 
Author(s):  RAJABZADEH MOHAMMAD ALI*, ZAMANSANI NAZANIN
 
* DEPARTMENT OF EARTH SCIENCES, SHIRAZ UNIVERSITY, SHIRAZ, IRAN
 
Abstract: 

Manganese deposits occur in association with ophiolite colored mélanges in Bashagard and Rudan areas, Hormozgan Province. The ore deposits are divided in three types: a) syngenetic, b) diagenetic-metamorphic and c) epigenetic ores. Psylomelane and braunite are the primary manganese minerals in syngenetic ores that were formed in sedimentary environment. The manganese compounds are found in alternative bands with amorphous silica and quartz. The diagenetic ores are characterized by the presence of bixbyite that is the product of braunite-hematite interaction. Lens-shaped structures of the manganese deposits hosted by siliceous rocks indicate the effects of diagenesis and metamorphism on primary banded structures. Metamorphism of greenschist, glaucophane schist and then amphibolite facies in some ores is indicated by the formation of manganese silicates and hydrosilicates e.g. johansenite in Bashagard and tephroite in Rudan. Progressive metamorphism in Rudan area is evidenced by the presence of rhodochrosite that is absent from Bashagard ores. Pyrolusite is the main manganese-bearing mineral from epigenetic ores that was formed by tardy hydrothermal process as open space fillings. High values of Mn/Fe (55.2), Si/Al (124.3), Zn (2-68ppm), ni (3-450ppm) along with negative anomaly of Ce, positive anomaly of Eu, low REEs in manganese ores are consistent with hydrothermal origin and the formation of the primary manganese compounds close to mid oceanic ridges above seafloor exhalation channels.

 
Keyword(s): MANGANESE, OPHIOLITE, GEOCHEMISTRY, RUDAN, BASHAGARD
 
 
References: 
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Click to Cite.
APA: Copy

RAJABZADEH, M., & ZAMANSANI, N. (2014). INVESTIGATION ON MANGANESE MINERALIZATION ASSOCIATED WITH OPHIOLITE COLORED MELANGES FROM BASHAGARD AND RUDAN AREAS, HORMOZGAN PROVINCE BY USING MINERALOGICAL AND GEOCHEMICAL DATA. GEOCHEMISTRY, 3(1), 411-418. https://www.sid.ir/en/journal/ViewPaper.aspx?id=402911



Vancouver: Copy

RAJABZADEH MOHAMMAD ALI, ZAMANSANI NAZANIN. INVESTIGATION ON MANGANESE MINERALIZATION ASSOCIATED WITH OPHIOLITE COLORED MELANGES FROM BASHAGARD AND RUDAN AREAS, HORMOZGAN PROVINCE BY USING MINERALOGICAL AND GEOCHEMICAL DATA. GEOCHEMISTRY. 2014 [cited 2021May15];3(1):411-418. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=402911



IEEE: Copy

RAJABZADEH, M., ZAMANSANI, N., 2014. INVESTIGATION ON MANGANESE MINERALIZATION ASSOCIATED WITH OPHIOLITE COLORED MELANGES FROM BASHAGARD AND RUDAN AREAS, HORMOZGAN PROVINCE BY USING MINERALOGICAL AND GEOCHEMICAL DATA. GEOCHEMISTRY, [online] 3(1), pp.411-418. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=402911.



 
 
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