All bauxite deposits of Northern Kazakhstan are of Mesozoic age of continental type and are represented by hydrargillitic ores. The largest of them are located within the western side and central part of the Turgai Trough and the southeastern slope of the Kazakhstan Shield (respectively, deposits of the West-Turgai, Central and Amangelda bauxite-ore districts).

Bauxite is the main raw material for aluminum production in the USSR and abroad. Production and consumption of aluminum is developing very rapidly. It is used in engineering, abrasive, metallurgical, chemical, cement and paint industries ...

Bauxite deposits of the Turgai trough, which are one of the raw material bases of the alumina and aluminum industry of the USSR, are known since 1931. These deposits belong to the platform karst and karst-erosion ...

Deposits of refractory clays in the northwestern part of Donbass are confined to the sandy-clay strata of the Poltava Formation of the Lower Neogene. Refractory clays lie on the Upper Paleogene sandy sediments of the Kharkov and Berek formations, they are covered by sands of the Poltava Formation or mottled clays of the Lower Neogene horizon of mottled clays, less often by Quaternary loams. ...

When selecting a system of prospecting and exploration work in the evaluation of fields is important their geological and industrial classification, reflecting both the peculiarities of the geological structure of the field, and the variability of the main geological and industrial parameters of deposits. ...

In the north-west of the RSFSR, the raw material base of the refractory industry is a group of refractory clay deposits in the Borovichi-Lubytinsky district of the Novgorod region. These deposits are exploited by the Borovichi Refractories Plant. In order to produce highly responsible fireclay refractories the plant needs dry, semi-dry and to a lesser extent plastic high refractory clays. Such clays are formed by large deposits at the deposits “Proletary”, “Bolshevik”, Ustye-Brynkino, im. Artema, etc. ...

In the north-west of the European part of the USSR the mineral and raw material base of the refractory industry is the Borovichi-Lubytinsk deposits of refractory clays in the Novgorod region. Out of 26 explored deposits of refractory clays six are exploited: Proletary, Bolshevi”, Volgino, Ustye-Brynkino, Sherekhovichi and Artem. All of them are confined to the Tula horizon of the Visean Stage of the Lower Carboniferous, which comes out close to the surface within the so-called Carboniferous escarpment ...