An area centered onSt. Petersburg, is relatively rich in minerals. Significant deposits in this area have not been identified, unpromising and unprofitable fields have been eliminated at a preliminary stage, but the promising ones are actively exploited.
General characteristic of the region
The territory of the region is fullyEast European (Russian) plain. The highest point does not reach even three hundred meters above sea level. It is the flat nature of the relief that explains why the ore minerals of the Leningrad Region are practically absent. But there are non-metallic, most of which are actively used in construction. On the territory of the region there is a ramified and developed river network, there are almost two thousand lakes, including the largest in Europe - Ladoga.
The area is located in the taiga zone, sois rich in forests (coniferous in the north and mixed in the south), which occupy more than half the territory of the region. Much of the place is swamped. But this did not prevent the almost complete study of the region on the availability of mineral resources. The map of minerals in the Leningrad Region is given below.
Availability of minerals
Of the twentyThere are only six names of minerals to the ore minerals. At the same time, more than five hundred deposits have been explored, but less than twenty percent are exploited. Mineral resources of the Leningrad Region are related to tectonics - the territory is located at the junction of tectonic structures. Therefore, the northern parts are rich in deposits of solid building materials - granite, stone, gravel, sand. Powerful layers of sedimentary rocks of the southern part contain phosphorites and combustible shales, bauxites, limestones and dolomites. Almost uniformly throughout the region are distributed deposits of peat, sand, clay. The Gulf of Finland's water area contains small deposits of iron-manganese ores. In addition, there are several radon sources and mineral thermal waters in the region.
Completely mastered minerals
According to the degree of development of depositsto identify several groups of which the mineral resources of the Leningrad Region are composed. The list should begin with fully developed minerals, which include schists, phosphates and bauxites.
Partially mined minerals are different speciesbuilding materials. Minerals of the Leningrad Region are rich in granite, limestone, construction and shaping sand, brick and refractory clay. The extraction of granite is carried out in the northern part of the Karelian Isthmus by an open method.
The area is not rich in abundant depositsgold, but gold-bearing places are present. Basically, this metal is found in deposits of other minerals, both ore and non-ore. But its availability in these sources is rather meager. Therefore, gold mining in the Leningrad region is recognized as unprofitable and is not being conducted in an industrial way. But it is of interest for amateur mining.
There are also mineralsLeningrad Region, whose deposits are not involved at all in operation. This includes deposits of dolomite, mineral paint, quartzite and clay. In addition, some types of minerals are under development, the deposits of which are found in the region. This magnetite ore, colored and ornamental stones, oil, gas and bitumen.