The system of cadastres is a fundamentally new basis for planning the rational use of mineral wealth of the country and is aimed at improving the economic mechanism of management of the mineral and raw materials complex.

For the systematic and rational study of the mineral resource base of the country, geological exploration work is carried out successively by stages. In this sequence, an important place belongs to prospecting and evaluation works, during which deposits are screened and objects for preliminary exploration are determined. As a result of prospecting and evaluation work, the commercial type and geological boundaries of the deposit in plan must be determined, and a geologically substantiated forecast for depth must be given.

The largest deposits of Iceland spar are confined to lava sheets of basic composition (the first type of deposits), to small dolerite intrusions (the second type of deposits), and to zones of tectonic fracturing in tuffaceous rocks (the third type of deposits). To date, the known deposits have been studied fairly well and the main geological regularities of their spatial distribution have been identified.