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Paper Information

Journal:   KHARAZMI JOURNAL OF EARTH SCIENCES (JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY))   spring-summer 2019 , Volume 5 , Number 1 ; Page(s) 79 To 98.
 
Paper: 

Fe-Ti Oxide Minerals Geothermometry and Oxygen Fugacity at the Dar Gaz Anomaly, Kahnuj

 
 
Author(s):  KARIMI SHAHRAKI BEHROUZ, Ghasemi Siani Majid*, Gholizadeh Kazem
 
* Department of Geochemistry, Faculty of Earth Sciences, Kharazmi University
 
Abstract: 
In the southeast of Iran, titaniferous magnetite deposits associated with the gabbro rocks occur in Kahnuj ophiolitic complex. Mineraloghraphy studies have revealed the primary and secondary ore mineral consist of titanomagnetite, ilmenite, hematite, goethite, martite, pyrite, chalcopyrite, pyrrhotite and silicate minerals (plagioclase, pyroxene, hornblende, olivine, alkali feldspar). Trellis-sandwich textures and ilmenite-titanomagnetite intergrowths are resulted from oxidation of former Ti-rich magnetite at different temperatures. Chemical analyses show that the ilmenite and magnetite (titanomagnetite) contains 46. 51 to 52. 68 and 4. 00 to 19. 71 wt. % TiO2 and 1. 00 to 2. 98 and 0. 00 to 1. 74 wt. % V2O3, respectively. The ulvö spinel (Mol % Usp) (Fe2TiO4) in titanomagnetite shows a composition ranging from 4. 58 to 56. 87 wt. %, and ilmenite lamellae are varying thickness and ilmenite type 1 to 3 contain of 88. 23 to 93. 94, 93. 04 to 99. 80 and 99. 09 to 99. 73 wt. % of the ilmenite (Mol % Ilm), respectively. Compositions of intergrowth Tm-Ilm pairs (type 2) were plotted on T/fO2 diagrams. The Tm-Ilm pairs show varying degrees of re-equilibration to subsolidus temperatures (551 to 830° C) and fO2 (-21. 6 to-23. 97). The Tm-Ilm pairs from Dar Gaz cluster around the QFM buffer curve for 1. 5 kbar total pressure.
 
Keyword(s): Kahnuj Ophiolitic Complex,Dar Gaz anomaly,Fe-Ti oxides,Geothermometry,Oxygen Fugacity
 
 
References: 
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+ Click to Cite.
APA: Copy

KARIMI SHAHRAKI, B., & Ghasemi Siani, M., & Gholizadeh, K. (2019). Fe-Ti Oxide Minerals Geothermometry and Oxygen Fugacity at the Dar Gaz Anomaly, Kahnuj. KHARAZMI JOURNAL OF EARTH SCIENCES (JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY)), 5(1 ), 79-98. https://www.sid.ir/en/journal/ViewPaper.aspx?id=695962



Vancouver: Copy

KARIMI SHAHRAKI BEHROUZ, Ghasemi Siani Majid, Gholizadeh Kazem. Fe-Ti Oxide Minerals Geothermometry and Oxygen Fugacity at the Dar Gaz Anomaly, Kahnuj. KHARAZMI JOURNAL OF EARTH SCIENCES (JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY)). 2019 [cited 2021November27];5(1 ):79-98. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=695962



IEEE: Copy

KARIMI SHAHRAKI, B., Ghasemi Siani, M., Gholizadeh, K., 2019. Fe-Ti Oxide Minerals Geothermometry and Oxygen Fugacity at the Dar Gaz Anomaly, Kahnuj. KHARAZMI JOURNAL OF EARTH SCIENCES (JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY)), [online] 5(1 ), pp.79-98. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=695962.



 
 
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