Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

The Survey of Physical-Chemical Environment in Sungun Copper Porphyry Deposit with the Using of Minerals Properties in the Copper Porphyry Deposits (North East of Tabriz)

Document Type : Original Research Paper

Authors
M. Mohamadian 1
M. Boomeri 2
A. Ahmadi 2
A. A. Moridi Farimani 3
H. Daglas 4
M. Jamali 2
1 epartment of Geology, Faculty of basic sciences, University of Systan & Baluchestan, Zahedan, Iran
2 Department of Geology, Faculty of basic sciences, University of Systan & Baluchestan, Zahedan, Iran.
3 Department of Geology, Faculty of basic sciences, University of Systan & Baluchestan, Zahedan, Iran
4 Micro Analysis office, New Brunswick university, Fredericton, Canada.
10.22071/gsj.2011.55004
Abstract
Sungun Porphyry Copper Deposit is located about 130 km to the northeast of Tabriz, northeast Iran. This deposit contains 796 million tons of ore with 0.61% Cu, 0.01% Mo, 0.016 ppm Au, 9.75 ppm Bi and Re (0.09 wt% of molybdenite). This research studies the physico-chemical environment using the chemical properties of minerals of this deposit. This deposit is related to granodiorite-diorite dikes and granodiorite stock that intruded into sedimentary and volcanic rocks of Cretaceous and Eocene. Dominant alterations are potassic, phyllic, argillic and propylitic from center outward which are characteristics of continental margin porphyry copper deposits. Simultaneously with the supergene mineralization, an iron cap of iron oxides, iron hydroxides, copper oxides, sulfates, carbonates and copper phosphates were developed on top of the deposit and along the fractures. In conclusion, based on mineral chemistry, in 450 ºC and 0.5 kb pressure (PT condition of potassic zone), sulfur fugacity and pH is determined to be as: log¦S2=-18 to -24 an pH=2.5 to 7.5. In 350 ºC and 0.5 kb pressure (PT condition of phyllic zone), oxygen and sulfur fugacities are: logƒO2= -20 to -33 and log¦S2=-6 to -15.
Keywords
Sungun
Iran
Porphyry
copper
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Scientific Quarterly Journal of Geosciences
Volume 20, Issue 79
Winter 2011
Pages 47-54