Studies on genesis of chromite and PGE in Naein ophiolite melange
Journal: Journal of Economic Geology (Vol.3, No. 2)Publication Date: 2015-07-01
Authors : Reza Shamsipour Dehkordi; Maryam Sadeghi; Zohre Gholami Fesharaki;
Page : 111-125
Keywords : Nain; Chromite; PGE; Ophiolite;
Abstract
Nain ophiolite melange is located 140 Km east of Isfahan. Based on the geological studies, this area belongs to Mesozoic ophiolite of Urumieh ? Dokhtar zone, west of central Iran. Country rocks are pridotite and serpentinized pridotite. The pridotite rocks are composed of Harzburgite, Lherzolite and replacement Dunite which is belong to spinel pridotite facies.Paragenesis of ore minerals are Chromite, Irarsite, Magnetite, Hematite, Pentlandite, Millerite, Chalcopyrite, Pyrite, and Covelline. Geochemical surveys of host rock and chromite show tholeiite series of magma and alpine type chromite. PGE (Ir, Pt, Pd, and Os) are enriched in chromite. REE spider diagram pattern show the processes of boninitic magma and partial melting.
Other Latest Articles
- Genetic relation between skarn mineralization and petrogenesis of the DarrehZerreshk granitoid intrusion, southwest of Yazd? ?? ? ?
- Two-sided asymmetric subduction; implications for tectonomagmatic and metallogenic evolution of the Lut Block, eastern Iran
- Petrogenesis of skarn related Cu-porphyry intrusion deposit, Ali-Abad- Darreh Zereshk, Yazd
- Disseminated, veinlet and vein Pb-Zn, Cu and Sb polymetallic mineralization in the GaleChah-Shurab mining district, Iranian East Magmatic Assemblage (IEMA)
- Zircon U-Pb dating of Maherabad porphyry copper-gold prospect area: evidence for a late Eocene porphyry-related metallogenic epoch in east of Iran
Last modified: 2015-07-01 13:50:56