Komatiite magmatism of the Archean greenstone belts of the southeastern part of the Baltic shield is considered here. The conformable bedding and interbedding of bodies of komatiites with pillow basalts and horizons of tuffs, with breccias at their tops, pillows, amygdules, glass and spinifex textures permit the determination of these rocks as peridotite komatiite lavas. Plutonic analogs of these rocks are found in ultramafic effusion feeders. Nickel-copper ore mineralization is orthomagmatic and is associated with komatiitic intrusives. The nickel ore potential of units associated with komatiite magmatism seems .to be correlated with the appearance of island-arc basalts: the larger these are, the smaller the ore potential of the structures. And, in this sense, the nearest analogs of the belts in the Baltic shield are the Canadian greenstone belts, not the Western Australian. These may be considered geotectonically as nickeliferous provinces.The southeastern part of the Baltic shield is a region of wide spreading greenstone belts; these are filled with Archean series and form a complicated network of the narrow elongated structures within gneissose granite blocks (Fig. 1). The extension of the belts ranges from 1 -2 km to a few tens of kilometers. In a number of such structures, komatiitic series are found (Fig. 1). The authors studied the volcanic-plutonic komatiite complex in the Kenozero-Kozhozero greenstone belt.Komatiitic bodies have ~arious lengths and thicknesses and conform with basalt sheets. Deformational and metamorphic changes in such basalts and komatiites are much the same. The generalized section of the researched bodies consists of two parts (Fig. 2): the upper, less thick part, is composed of breccias and vitreous and spinifex rocks; the lower part of serpentinite after ordinary peridotite and dunite. The ratio of thicknesses of the upper and lower parts fluctuates from 1: 10 to 1: 50.The glass, the skeletal forms of magmatic minerals, and the spinifex textures are doubtless evidences of the crystallization of these rocks from a melt under high temperature-gradient conditions. The composition of the melt is determined from the composition of altered glass and rocks with spinifex textures (Table 1), and corresponds to that of peridotite komatiites (Arndt et al. 1979, Brooks and

Methodological approaches of the solid mineral center allocation in Russia are presented. The basic principles and criteria on the basis of which the allocation of the mineral center in the Far Eastern Federal District was carried out are described. A detailed description of its components (industrial and raw materials hub, deposits, perspective area) is given on the example of the Kamchatka mineral center