Background concentrations of selected radionuclides, organic ...
Brennon R. Orr
Brennon R. Orr, L. DeWayne Cecil, LeRoy L. Knobel, United States. Dept. of Energy, Geological Survey (U.S.). sandstones typically contain up to 0.1 ppm mercury, and limestone can contain as much as 0.048 ppm mercury (Saupe, 1972, p.