The locality itself is situated in a remote area of Tyumen Oblast, near the crest of the Ural Mountains in a portion of that range known as the Subpolar Urals (Pripolyarnyy Ural).
Neroika village is the headquarters of the Neroisk Exploration and Development Company, the most important sponsor of Polar and Subpolar Urals exploration and the agency in charge of mining at the Dodo site.
The first discovery of large quartz crystals in the Subpolar Urals took place in 1927, along the upper reaches of the Lyapni River.
(1) The Dodo deposit formed at greater depths than other deposits of the Subpolar Urals. This great depth resulted in a particular geochemical environment (fractionation of heavy and light rare-earth elements, of elements differing in ionic radius, and of isotopes) during mineral deposition.
(1974) [Quartz crystal from the Subpolar Urals.] Nauka, 212, 2 (in Russian).
The mine site is near the crest of the Subpolar Urals (a range connecting the Polar Urals to the north and the Northern Urals on the south).
A detailed discussion of the formation of Subpolar Urals Alpine-type cleft deposits may be found in Bukanov (1974), and Burlakov (1989) (see also under "Paragenesis" in the companion article on the Dodo mine, page 431-432 in this issue).
The Puiva and Dodo deposits have long been recognized as among the most remarkable occurrences in the Subpolar Urals. They are also among the largest deposits, and have been worked for over 60 years.
(1) Zeolites and fluorapophyllite are very common; no other deposit in the Polar and Subpolar Urals contains such a variety of these minerals.
(1995) Crystal-bearing veins of the Subpolar Urals. World of Stones, no.
The Puiva mine in the Subpolar Ural Mountains is an extraordinary Alpine cleft-type deposit which has yielded the world's finest specimens of ferro-axinite, world-class quartz gwindels, excellent titanite crystals, and a variety of other species.