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Paper Information

Journal:   GEOSCIENCES   WINTER 2017 , Volume 26 , Number 102; Page(s) 73 To 90.
 
Paper: 

MINERAL CHEMISTRY AND GEOCHEMISTRY OF LAMPROPHYRIC DYKES IN THE SUNGUN CU - MO PORPHYRY DEPOSIT (VARZAGHAN- NORTHWESTERN IRAN)

 
 
Author(s):  KAMALI A.*, MOAYYED M., AMEL N., HOSSEINZADEH M.R.
 
* DEPARTMENT OF EARTH SCIENCES, UNIVERSITY OF TABRIZ, TABRIZ, IRAN
 
Abstract: 

Sungun Cu-Mo porphyry deposit is located in East Azarbaijan province and at northwest of Iran. From the petrology viewpoint, the Sungun copper mine is consisted of porphyry Sungun (SP), and eight categories of delayed dykes made of quartz-diorite (DK1 (a, b, c)), gabbrodiorite (DK2), diorite (DK3), dacite (DK4), lamprophyre (LAM) and micro-diorite (MDI). The main minerals of lamprophyric dyke are biotite, plagioclase, K-feldspar, and amphibole with porphyritic and microlitic porphyry textures. Lamprophyric dykes in the studied area have alkali-basalt composition and based on whole rock geochemistry is originated from a shoshonitic magma. Mineral chemistry analysis revealed that the composition of plagioclase varies from oligoclase to albite, amphibole is Magnesiohornblende and biotite composition varies from siderophyllite to eastonite. Lamprophyric dykes have been originated from a magma with high oxygen fugacity. Based on biotite thermometry, the temperature of biotite crystallization in lamprophyric dyke was 650 to 750oC. According to the mineralogical and geochemical evidence, studied lamprophyre samples are of kersantite type and belong to calk-alkaline lamprophyres. Multi-element diagrams normalized to chondrite and primitive mantle indicates LREE and LILE enrichment and HREE and HFSE depletion in the Sungun lamprophyric dykes. Based on trace elements ratio diagram of La/Sm vs. La parental magmas can have been generated from low degree partial melting of subcontinental mantle source with garnet-lherzolite composition. The dykes formed in Post-collisional geotectonic environment of the studied samples and trace element geochemical evidence indicate that produced magma formed from a metasomatic mantle due to an ancient subduction.

 
Keyword(s): LAMPROPHYRIC DYKE, KERSANTITE, GARNET-LHERZOLITE, POST COLLISION, SUNGUN
 
 
References: 
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Cite:
APA: Copy

KAMALI, A., & MOAYYED, M., & AMEL, N., & HOSSEINZADEH, M. (2017). MINERAL CHEMISTRY AND GEOCHEMISTRY OF LAMPROPHYRIC DYKES IN THE SUNGUN CU - MO PORPHYRY DEPOSIT (VARZAGHAN- NORTHWESTERN IRAN). GEOSCIENCES, 26(102), 73-90. https://www.sid.ir/en/journal/ViewPaper.aspx?id=546142



Vancouver: Copy

KAMALI A., MOAYYED M., AMEL N., HOSSEINZADEH M.R.. MINERAL CHEMISTRY AND GEOCHEMISTRY OF LAMPROPHYRIC DYKES IN THE SUNGUN CU - MO PORPHYRY DEPOSIT (VARZAGHAN- NORTHWESTERN IRAN). GEOSCIENCES. 2017 [cited 2021April18];26(102):73-90. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=546142



IEEE: Copy

KAMALI, A., MOAYYED, M., AMEL, N., HOSSEINZADEH, M., 2017. MINERAL CHEMISTRY AND GEOCHEMISTRY OF LAMPROPHYRIC DYKES IN THE SUNGUN CU - MO PORPHYRY DEPOSIT (VARZAGHAN- NORTHWESTERN IRAN). GEOSCIENCES, [online] 26(102), pp.73-90. Available at: <https://www.sid.ir/en/journal/ViewPaper.aspx?id=546142>.



 
 
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