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Paper Information

Title: 

INVESTIGATION ON THE GENESIS, GEOCHEMISTRY AND EXPLORATION SIGNIFICANCE OF COPPER AND GOLD IN THE TAKNAR DEPOSIT (BARDASKAN)

Type: PAPER
Author(s): AHMADI SEYED MASOUD,AFTABI ALIJAN
 
 
 
Name of Seminar: GEOLOGICAL CONGRESS
Type of Seminar:  CONGRESS
Sponsor:  IRANIAN GEOLOGICAL SOCIETY
Date:  2005Volume 9
 
 
Abstract: 

The Taknar area is located in northwest of Bardaskan, Khorasan province. The host rocks to the ore deposit include metamorphosed sedimentary- volcanic rocks of the greenchist facies, probably of upper Proterozoic age. The most important host rock units include choloritic, sericitic and tuffaceous schists and cherty carbonatic sequences. The structure of iron ore deposit comprises of macro, meso and micro banding of magnetite and sulfides associated with schists, cherts and carbonates. The presence of phenoclasts or dropstones in magnetite banding and host rocks indicate glacio-marine deposition associated with volcanicexhalative activity and a similar iron ore association of the Rapitan banded iron- sulfid ore. The geochemistry of ore bands represents the high values of iron and silicon and low content of aluminum which is particularly of banded iron ore character. With regard to abundant magnetite in this deposit, sampling and study of heavy minerals could be a useful prospecting guide. To study the exploration significance of the area, several samples were collected from alluvial sediments in different drainage patterns of Taknar area. The samples were analyzed by Emission Spectrophotometry method. The higher gold (0,040ppm) and copper value (250ppm) is located close to the Taknar mine (main deposit) in the north-northwest of Kalateh Jomeh village. Based on this study, the gold values in this area are very low that confirmed by determination of gold and copper in several core samples. Yet, before giving any economic evaluation in this area, further investigation seems to be necessary.

 
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