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 a systematic and rational study of the mineral resource base of the country, geological exploration is carried out in successive stages. In this sequence, an important place belongs to prospecting and evaluation works, in the process of which the fields are sorted out and the objects for preliminary exploration are determined ...

The largest deposits of Iceland spar are confined to lava beds of basic composition (the first type of deposits), to small dolerite intrusions (the second type of deposits), and to zones of tectonic crushing in tuffogenic rocks (the third type of deposits). By now, the known deposits have been relatively well studied and the main geologic regularities of their spatial distribution have been revealed.