Radiological Hazards for Marble and Granite Used at Shak El .Dec 24, 2013 . The activity concentration of radionuclides in the 238U-, 232Th-series and 40K has been . such as uranium mining have also redistributed these radionuclides. . sites of origin and their geochemical characteristics. Therefore.radionuclide in marble mining site,Evaluation of radionuclide concentrations and associated .Apr 4, 2015 . of gamma-radiation hazard indices I r for the marble and granite samples are below 0.058 and 1.905, respectively. . tivity concentrations of natural radionuclides of 232Th,. 226Ra ... and El-Mahamid Mines, Egypt, J. Environ.natural radioactivity analysis in commercial marble samples of .The natural radioactivity in commercial marble samples of 6 quarries in “Cachoeiro do . region due to geological characteristics of this place. .. intensity radiation and quantity of radionuclides presents and mean values are significant only.
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