Впервые метод комбинированного электропрофилирования был предложен в 1937 г. А. С. Семеновым. Проведенные им и Н. П. Григорье­вой лабораторные и полевые экспериментальные работы показали вы­сокую эффективность метода при поисках хорошопроводящих крутопа­дающих рудных тел, залегающих в электрически однородной среде.

In Central Kazakhstan at the deposits of quartz-molybdenum formation the processes of molybdenum leaching from the oxidation zone are widely developed. Molybdenum leaching is especially intensive at the outcrops of molybdenum-ore quartz veins, i.e. in the very near-surface part of ore bodies, at a depth of several tens of centimeters. In this case, near the surface in place of molybdenum, leaching voids and poverite remain, which is difficult to visually detect.

Radioactive methods with a high degree of sensitivity can find wide application in prospecting and exploration of deposits where radioactive elements are in subordinate or generally non-industrial accumulation. The following describes the results of studies of the applicability of radioactive methods (radon survey) in the search for lead-zinc deposits.

Plumbometric survey is widely used in prospecting for lead deposits in Central Kazakhstan. Work carried out at several polymetallic deposits in Central Kazakhstan in 1951-1953 established the possibility of significantly simplifying the sampling and processing methods. A simplified method for sampling and processing metallometric samples is proposed for prospecting for lead deposits, which consists of selecting a class smaller than 0.1 mm by sieve analysis, which is directly sent for analysis. This method significantly speeds up, simplifies and reduces the cost of metallometric survey work. The applicability of the described method should be tested at other deposits, where, during the formation of eluvial-deluvial deposits, minerals containing a valuable component pass into eluvium and deluvium in the form of ocher and finely dispersed formations. In 1954, the author demonstrated the applicability of this method in the conditions of Central Kazakhstan when analyzing samples from eluvium-deluvium for zinc, copper and molybdenum.

Quantitative determination of elements in rocks and ores is widely carried out on the basis of chemical and physicochemical methods of analysis. Physicochemical methods in quantitative analysis are mainly represented by spectral and polarographic methods. The luminescent method is utilized for these purposes mainly as a special method of quantitative mineralogical analysis [1]. Quantitative mineralogical analysis with the use of the luminescent method is based on the property of luminescence of some minerals when irradiated with cathode, ultraviolet and X-rays. Thus, based on the use of cathode luminescence of scheelite, its quantitative determination in scheelite ores and concentrates is carried out [2].

Prospecting for polymetallic deposits in the conditions of Kazakhstan is very difficult in areas of smooth relief and widespread development of eluvial-deluvial deposits. Here, prospectors primarily deal with loose deposits, under the cover of which bedrock is hidden. Additional complications in searching for polymetallic deposits from the surface arise due to the fact that these deposits usually have a deeply worked oxidation zone, as a result of which primary sulfide minerals are mostly transformed into super-sulfide ones. Oxidized sulfide ores, having increased porosity, are very easily subjected to further mechanical destruction, turning into loose finely dispersed formations.