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Malczewski, D., L. Teper, G. Lizurek & J. Dorda (2005). In situ gamma-ray spectroscopy in common rock raw materials mined in Krakow vicinity, Poland. In: Naturally occurring radioactive materials (NORM IV), IAEA-TECDOC-1472. International Atomic Energy Agency, Vienna, 368-376.


The natural radioactivity of 40K, 208Tl, 212Pb, 212Bi, 214Pb, 214Bi, 228Ac and the fallout of 137Cs in common rock raw materials mined in Krakow vicinity were measured in situ using a portable gamma-ray spectrometry workstation. The measurement points were chosen for different regional rocks in: Devonian and Jurassic limestones, dolomite, trachyandesite, porphyry, porphyry tuff, diabase and melaphyre. 40K activity varied in the range from about 82 Bqkg-1 (Jurassic limestone) to 3150 Bqkg-1 (porphyry tuff). The activity concentrations associated with 228Ac (232Th series) varied in the range from 9 Bqkg-1 (Jurassic limestone) to 56 Bqkg-1 (porphyry tuff), whereas activity of 226Ra (238U series) ranged from about 13 Bqkg-1 (Jurassic limestone) to 43 Bqkg-1 (Devonian limestone). The highest deposition of 137Cs
(20 kBqm-2) was recorded in Devonian limestone.