The considered aspects of the relationship between mineralization and dykes of different composition, age, and origin allow us to consider dykes as reliable indicators for studying the direction of tectonomagmatic and metallogenic processes of different levels, for elucidating the patterns of localization of mineralization and its prediction, for deciphering the tectonic conditions of formation of ore bodies and peculiarities of geological development of certain regions, and in some cases dykes can be carriers of both syngenetic and epigenetic mineralization.

Skarn iron ore deposits are polyformational, so the regional regularities of their location are closely related to the evolution of their crustal structures. Local forecasting is determined primarily by the depth of deposit formation and their location within volcanoplutonic or metamorphic complexes.

In the conditions of prevailing structural-tectonic factor of control of mineralization the informative features for the selected facies of near-ore metasomatites of quartz-small-mica group are: average size of sericite or muscovite, pseudomorphic replacing biotite: degree of berezitization of grantoids, peculiarities of mineral composition of biotite neoplasms.

The dependence of reflectivity and other properties of minerals on their chemical composition has been noted by a number of researchers. It is mentioned, in particular, that the reflectivity decreases with increasing content of magnesium oxide in the composition of magnomagnetites ...

The method of decrepitation is based on the fact that when heating gas-liquid inclusions after their homogenization, even a slight increase in temperature leads to a sharp increase in pressure inside the inclusion. This pressure, as a result of exceeding the strength limit of the mineral forming the walls of the inclusion, causes their rupture ...

The Sokolovskoye magnetite ore deposit is one of the largest in the Turgai Trough. It lies among sedimentary volcanogenic rocks of Lower Carboniferous age (Civ + n), monoclinally falling to the east at angles from 40 to 60°. Structurally, the deposit is confined to the eastern wing of the anticlinal fold.

The study of distribution patterns of impurity elements is a necessary addition to the genetic and industrial characterization of ores and is of particular importance in connection with the problem of their integrated use. In ores of Sarbaisky deposit iron as the leading ore-forming element is accompanied by a significant number of impurity elements, the most important of which is cobalt.

At the stage of detailed exploration the area of the open pit is drilled by core holes to the full depth of mineralization on a network of 100X50 m (100X75 m - in the plane of dip of the ore body). At the stage of operational exploration - to a depth of 30-40 m using a 50х25 m grid (50X40 m in the plane of the ore body dip). The 50X25 m grid is used to drill the central part of the pit, where mainly rich and poor ores are concentrated. The hanging and lying sides of the ore deposit (poor ores and ore-free interlayers) were explored using a 100X50 m grid. Exploration boreholes were sampled within the ore deposit section by section, with section length of 2-3 m. Samples were analyzed for iron, sulfur and phosphorus. Blast holes 10-20 m deep were drilled on a 6X6 m grid, sampled with one sample and analyzed for iron and sulfur.