Since magnesite is a unique mineral in Iran and is found only in the provinces of Sistan and Baluchestan and South Khorasan, the reserves in Sistan and Baluchestan are significantly larger than those in South Khorasan. In particular, the Ghaleh Bid magnesite mine, as the largest in Iran, holds nearly half of the country’s magnesite reserves and can play a crucial role in supplying magnesite products and refractory materials for the country. 

The Ghaleh Bid mine spans 28 square kilometers, with a length of 16 kilometers and an average width of 1.75 kilometers. Magnesite mineralization occurs along the entire 16-kilometer length of the mine, with evidence such as trenches, working faces, and other visible signs of the mineral presence.

Ghaleh Bid is the only mine that contains all types of magnesite, including cauliflower, vein, and secondary types—something no other mine in the country has. In this mine, there is a 7-kilometer-long area with an average width of 100 meters, an average depth of 50 to 60 meters, and a 15% average frequency of cauliflower magnesite, which alone holds nearly 15 million tons of reserves. The grade of this type of magnesite ranges from 88% to 95%.