Dumps of Excavation Sites in the Elkon Horst as the Sources of Natural Radionuclides and Toxic Elements
S. YU. ARTAMONOVA,В В M. S. MELGUNOV, V. N. DEMENTYEV and L. V. MIROSHNICHENKO
Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Koptyuga 3, Novosibirsk 630090 (Russia)
E-mail: artam@igm.nsc.ru
Keywords: ore deposits, dumps, hypergenesis, secondary scattering aureoles, mass transfer with water, migration of radionuclides, natural radionuclides, isotopes, toxic elements, ecological risk
Pages: 265–278
Abstract
Experimental data on water-assisted migration of uranium and microelements that are satellites of gold, from the dumps formed during exploration works in 1960–1970 at the territory of gold and uranium deposits of the Elkon horst (Yakutia) are presented. Investigations were carried out using a complex of methods including X-ray fluorescence analysis with the synchrotron radiation, semiconductor high-precision gamma spectrometry, scintillation gamma spectrometry, instrumental neutron activation analysis etc. It was established that the excavation dumps are the objects of increased ecological risk.
|
