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Ground Magnetic Survey for Exploration of Massive Sulfide in Northeast Iran

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Author(s): E. Salati | M.R. Haidarian Shahri | M.H. Karimpour | M. Moradi

Journal: Journal of Applied Sciences
ISSN 1812-5654

Volume: 8;
Issue: 22;
Start page: 4051;
Date: 2008;
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Keywords: polymetal massive sulfide | Taknar | magnetic survey

ABSTRACT
The aim of this research was to use ground magnetic survey for exploration of new deposit in Taknar polymetal massive sulfide which is located in Northeast Iran in a tectonic corridor between two active faults. It is a syngenetic type mineralization formed at specific horizon within Taknar formation (Paleozoic?). Four mineralized zones named Tak 1, 2, 3 and 4 have been identified. Three style of mineralization such as layered, massive and stockwork have been recognized. Magnetite increases toward the massive part (up to 80 %), which is situated in the upper section. Magnetic susceptibility of the country rocks is 6x10-5 to 27x10-5SI, the stockwork mineralization is 4600x10-4SI, the layered is 7054x10-4 SI and massive is 1730x10-3SI. Due to this sharp magnetic contrast magnetic method found ideal and used for the identification of new deposit in Tak 1, 4 and outside of Tak 1 (to the east). Magnetic maps and images revealed distinctive anomalies on Tak 1, 4 and outside of Tak 1. The amplitude of the anomaly on Tak 1, 4 and outside of Tak 1 was 1500, 2227 and 1231 gamma respectively. The anomaly outside of Tak 1 is similar in magnitude to Tak 1 and does not have surface exposure. By analogy the source of all magnetic anomalies in Tak 1, 4 and outside of Tak 1 is magnetite present along with mineralization. Therefore the location of the anomaly outside of Tak 1 on the reduction to the pole map was proposed as drilling target.
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