| Schlich sampling unconsolidated sediments is accompanied by a selection samples of bedrock and other kinds of complex search operations. Often within the watershed are put litho-geochemical survey on the loose, or bedrock. With limited distribution in the fluvial deposits of sand and gravel formations sampled from the silt-clay sediments. Investigation of hydrochemical and soil hydrochemical sampling complements the results schlich testing. Interesting data are often obtained by studying the halos of detrital quartz ore, biochemical testing. All kinds of search operations are closely linked to various geophysical surveys. Stage 3 - exploration. The work of this stage is being investigated for mineral deposits within the known or potential ore fields and swimming pools, where the second stage of investigations, the possibility of detection of deposits, confirmed the presence of promising developments of mineral resources, or their direct search features. The scale of search operations, running on well-localized promising areas, network search observations, measurements and testing are determined by the tasks set, the estimated size of the objects of search and the complexity of the geological structure of the district. Searches of the third stage the areal and volumetric methods using ground-penetration of surface mining, drilling of wells by using a rational set of search methods and different kinds of detailed testing. When the orientation of searches performed to identify placer specialized observation to differentiate areas of nutrition on the saturation and intensity of mineralization compiled maps and tested indigenous sources of alluvial and intermediate sewers. Mapping of erosion and accumulation levels, the analysis of the history of local morphostructures, litho-stratigraphic correlation of productive deposits can provide perspective and horizons of the morphological structure of the section of unconsolidated sediments, to assess the role of intermediate collectors in the formation of placers. |