Geology, alteration, stream sediment geochemistry and magnetometry in the west of geological map of Basiran, 1:100000, (East- south east of Qaleh Zari)

The study area is located in north-east of Lut block and in the western part of geological map of Basiran (1:100000). In this area, acid to intermediate plutonic and subvolcanic rocks intruded into Eocene-Oligocene volcanic rocks and is a suitable area for mineralization. Indication of probable mineralization does by using of Aster satellite data. Processing of data has shown propylitic, argillic and sericitic alteration and formation of iron oxides (Hematite). Based on these processing, geochemical data related to those parts that mineralization is more probable was studied. It was recognized that in the east and northeast of Bisheh village, there are anomalies of copper, zinc, lead, tin and gold, and in the south west of Bisheh, there are anomalies of tin, tungsten, zinc, lead, and iron. The highest values of Cu, Zn, Pb, Sn and W is 123, 149, 56, 11, 39 ppm respectively and Au is equal to 16 ppb. Tin and tungsten anomalies in the north-east of Bisheh are related to ilmenite series granitoids bodies. Airborne geophysical studies have shown a distinguished magnetic anomaly in the east of Bisheh. Ground magnetic survey shows intensive anomaly (49500 nT) and the existence of ferrimagnetic mineral. Mineralographic studies of core samples indicated that the source of magnetic anomaly is magnetite. Magnetite genesis is related to intruding of magnetite series granitoids bodies to Paleocene limestone and occurring skarn.