Author(s)

Pedram Attarzadeh¹, Mehrdad Karimi^2*, Mohammad Yazdi³, Kamal Nouri Khankahdani²

¹Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran.
²Department of Geology, Shiraz Branch, Islamic Azad University, Shiraz, Iran.
³Department of Geology, Faculty of Earth Sciences, Shahid Beheshti University, Tehran, Iran.

The Neyriz ophiolite complex is a part of NW-SE thrust belt (Late Cretaceous) of Iran, which is over the Arabian plate margin. The complex is mainly composed of the upper mantle rocks. Our research was focused on the eastern part of Neyriz ophiolite complex so called as “Dowlat Abad-Tang e Hana”. Mantle sequence of this ophiolitic complex is comprising predominantly of harzburgite and minor lherzolite, dunitc sheaths and chromite pods. Harzburgite is the most abundant ultramafic rock and is associated with the less dunite masses. The chromites are known with Cr# 42 to 76 and Mg# 73 to 89. There is a negative correlation between Cr#-Mg# which is one of the features of podiform chromites. The geochemistry of these chromites is consistent with the overall composition of podiform chromites in terms of Cr#, Mg#, the amounts of Cr₂O₃ (13.35% - 54.47%), Al₂O₃ (0.43% - 8%), MgO (13.25% - 38.56%), TiO₂ (0.003% - 0.206%) as well as the correlations between various oxides and all of them are high chromium types.

Ophiolite, Podiform Chromite, Neyriz, Iran

Attarzadeh, P. , Karimi, M. , Yazdi, M. and Khankahdani, K. (2017) Geochemistry of Chromitites in Eastern Part of Neyriz Ophiolite Complex (Southern Iran). Open Journal of Geology, 7, 213-233. doi: 10.4236/ojg.2017.73015.