<abstract xmlns="http://www.w3.org/1999/xhtml">Significant uranium mineralization represented by a typical assemblage of uranyl supergene minerals in a quartz-uraninite vein hosted in the exocontact zone of the Variscan-Tanvald granite was found at a new construction site in the municipality of Jablonec n. Nisou. Activities of 222Rn in soil gas reached 1 MBq/m3 around two houses, with a maximum of 3.33 MBq/m3 between them on a uranium ore lens outcrop. The uranium content reaches up to 291 ppm eU (3595 Bq/kg 226Ra), and it is possible to find many ‘hot’ pieces of uranium ore fragments with a high percentage of uranium in the Quaternary cover in this place. This unfavourable situation is a result of an improper spatial planning process. The constructor was given the permission to construct the building even though the construction site did not meet safety requirements and the geological survey had failed. Not only geological prospecting was underestimated, but also the radon risk assessment was undervalued.</abstract>

Significant uranium mineralization represented by a typical assemblage of uranyl supergene minerals in a quartz-uraninite vein hosted in the exocontact zone of the Variscan-Tanvald granite was found at a new construction site in the municipality of Jablonec n. Nisou. Activities of 222Rn in soil gas reached 1 MBq/m3 around two houses, with a maximum of 3.33 MBq/m3 between them on a uranium ore lens outcrop. The uranium content reaches up to 291 ppm eU (3595 Bq/kg 226Ra), and it is possible to find many ‘hot’ pieces of uranium ore fragments with a high percentage of uranium in the Quaternary cover in this place. This unfavourable situation is a result of an improper spatial planning process. The constructor was given the permission to construct the building even though the construction site did not meet safety requirements and the geological survey had failed. Not only geological prospecting was underestimated, but also the radon risk assessment was undervalued.

Construction of new houses on a uranium vein outcrop: a case study from the Czech Republic

Institute of Hydrogeology, Engineering Geology and Applied Geophysics, Faculty of Science, Charles University in Prague, Albertov 6, 128 43, Prague 2,

Institute of Physics, ASCR, v.v.i., Na Slovance 2, 182 21, Prague 8,

Institute of Earth Sciences, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno,

Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, 193 00, Prague 9,

Nukleonika

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Significant uranium mineralization represented by a typical assemblage of uranyl supergene minerals in a quartz-uraninite vein hosted in the exocontact zone of...

Construction of new houses on a uranium vein outcrop: a case study from the Czech Republic

Publié en ligne: 10 sept. 2016

Pages: 343 - 349

Reçu: 04 janv. 2016

Accepté: 31 mars 2016

DOI: https://doi.org/10.1515/nuka-2016-0057

Mots clés
Tanvald granite, vein-type uranium, uranyl minerals, spatial planning, radon risk

© 2016 Viktor Goliáš et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Construction of new houses on a uranium vein outcrop: a case study from the Czech Republic

Publié en ligne: 10 sept. 2016

Pages: 343 - 349

Reçu: 04 janv. 2016

Accepté: 31 mars 2016

DOI: https://doi.org/10.1515/nuka-2016-0057

Mots clésTanvald granite, vein-type uranium, uranyl minerals, spatial planning, radon risk

© 2016 Viktor Goliáš et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
Tanvald granite, vein-type uranium, uranyl minerals, spatial planning, radon risk