Writers : Ahmadi, Seid Masoud; Aftabi, Alijan
Refference : 9th symposium of geological society of Iran, Tehran, Teacher Training university
Publishing Year : 1384

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 cherry 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 phenoclosts or dropstones in magnetite banding and host rocks indicate glacio- marine deposition associated with volcanic exhalative activity and a similar iron ore association of the Rapitan banded iron- suIfide ore. The geochemistry of ore hands represents the high values of iron and silicon and low content of aluminum witch 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 Spectrophotometrv method. The higher gold (0.040ppm) and copper value (350ppm) 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.
Subject List : Copper, gold