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Scientific Review. Geographical Sciences

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CHANGING OF GOLD IN THE TECHNOGENIC PLACERS

Наумов В.А., Наумова О.Б.
Man-made and technogeogenical processes change the gold particles in the placers. Free gold-mining subjected to mechanical differentiation. In the metal particles under the influence of physico-chemical and biological processes occurring changes. On existing metal particles formed new units of gold. Gold-bearing phases of the placers of the Urals studied. Gold examined with an electron microscope «Jeols-35». The conversion can occur as a metal enlargement (aggregation) and the reduction in grain size (dispersion). The internal structure of gold is different phases of different composition, representing: 1) the parent metal, 2) the products of its transformation during processing placers, 3) technological growths. The possibility of the controlled formation and concentration of mineral deposits in technogenic placers examined.