TITLE:
Petrology and Geochemistry of Ophiolitic Host Rocks of Copper Mineralization in Dowlat Abad-Tang e Hana Area (Neyriz-Iran)
AUTHORS:
Pedram Attarzadeh, Mohammad Yazdi, Mehrdad Karimi, Kamal Noori Khankahdani
KEYWORDS:
Ophiolite, Copper Mineralization, Tang-e-Hana, Neyriz, SW of Iran
JOURNAL NAME:
Open Journal of Geology,
Vol.6 No.8,
August
8,
2016
ABSTRACT: Dowlat Abad-Tang e Hana area is a part of Neyriz ophiolite zone, parallel
to the Zagros thrust, SW of Iran. It is also a part of obduction thrusting belt
over the edge of the Arabian continent during the late Cretaceous. Petrographic
investigation indicates the main host rocks are harzburgite, dunite, pyroxenite,
basalt, gabbro and pelagic marine sediments. The main magma type of this
ophiolite complex is sub-alkaline. The geochemical data of analysed samples
show depletion of Na and K, and enrichment in Ca. Copper mineralization in
Dowlat Abad-Tang e Hana is hosted mainly in peridotite rocks. The
mineralizations are vein type and are associated as copper carbonate (malachite
and less azurite). The average of Cu grade is 2.3 wt%. The geochemical and
mineralogical data show that the primary source of copper is ortho-magmatic
(from ultra-basic rocks and ferro magnesium minerals), which later influenced
by hydrothermal processes.