In-situ gamma-ray spectrometry is widely used for not only exploration of radioactive mineral deposits but geological mapping and mineral exploration based on native radioactivity of minerals and rocks.
Jong Pok Yon, a researcher at the Faculty of Earth Science and Technology, has applied in-situ gamma-ray spectrometry to epithermal deposit survey in Ryongha area of Ryanggang Province.
First, he applied in-situ gamma-ray spectrometry to the Solryong alunite-kaolinite deposit well-known as a typical epithermal deposit to explain its gamma-ray spectrometric characteristics. The result showed the higher anomalies of K/(eU+eTh) ratio and K/eTh ratio in the area of alunite-kaolinite distribution. Second, he applied gamma-ray spectrometry in the new target about 5km west of the Solryong deposit, and mapped the gamma-ray spectrometry results.
The outlined anomalies of K/(eU+eTh) and K/eTh ratios are consonant with alunite-kaolinite outcrops. This indicates that the high anomalies of K/(eU+eTh) and K/eTh ratios can be utilized as the indicators for targeting epithermal deposits in this region.
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