Copper deposits in the Nahand-Ivand area are hosted by gray sandstone.

Detailed EPMA indicates that the syn-sedimentary to early-diagenetic framboidal pyrite (PyI) has low values of Cu, Pb and Ag. Successive generations of pyrite (Py II and Py III) formed as a consequence of overgrowths and diagenetic processes.

Geochemical studies indicate that the Nahand-Ivand deposits are rich in copper and silver, reaching up to 35 wt.% and 730 ppm, respectively. The EPMA studies show that two-phase covellite–yarrowite associations are most widespread and, where mixtures of Cu–sulfides coexist, Ag is preferentially partitioned into covellite over co-existing digenite.

Several features, including framboidal pyrite and cuprian pyrite, the nonequilibrium assemblage of pyrite and Cu-rich sulfide, basket-weave intergrowth texture of chalcopyrite and bornite, the presence of roxbyite, replacement and open space filling texture, and concentration of copper mineralization associated with organic matter, suggest that the Nahand-Ivand deposits are low-temperature sediment-hosted stratiform copper deposits.