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Weathering of As-rich rocks in the Čelina-Mokrsko gold district, Bohemian Massif (CZ)
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SYSNO ASEP 0028998 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Weathering of As-rich rocks in the Čelina-Mokrsko gold district, Bohemian Massif (CZ) Title Zvětrávání arzenem bohatých hornin v rudním revíru Čelina-Mokrsko, Český masív (CZ) Author(s) Drahota, Petr (GLU-S) SAI, RID, ORCID
Pertold, Z. (CZ)Source Title Securing the future : international conference on mining and the environment, metals and energy recovery : proceedings : June 27-July 1, 2005, Skellefteå, Sweden. - Stockholm : SveMin, 2005 Pages s. 242-251 Number of pages 10 s. Action International Conference on Mining and the Environment , Metals and Energy Recovery Event date 27.06.2005-01.07.2005 VEvent location Skellefteå Country SE - Sweden Event type WRD Language eng - English Country SE - Sweden Keywords arsenic ; weathering ; Mokrsko (Czech Republic) Subject RIV DD - Geochemistry CEZ AV0Z30130516 - GLU-S (2005-2011) Annotation Volcano-sedimentary and granodiorite bedrock of the Čelina-Mokrsko gold district (Bohemian Massif) contains an elevated calcite and sulfide (arsenopyrite) content. The waters of the district reveal significant influence of calcite weathering. This plays main role in acid-buffering reactions in the regolith. High concentrations of As were detected in soils and waters of the district. Sorption/desorption of As to/from Fe oxyhydroxides is considered to be an important factor controlling its mobilization. Mass budgets of arsenic in soils of two small catchments under the study reveal that As can be accumulated or depleted in different areas of the ore district. Similar average contents of As in the bedrock and related soils, however, suggest that the long-term inputs and outputs of As in the soils at the Čelina-Mokrsko gold district are nearly balanced. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Tel.: 226 800 273 Year of Publishing 2006
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