Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Zdenek Johan"'
Autor:
Zdenek Johan, Jindřich Kvapil, Gildas Ratié, Vojtěch Ettler, Martin Mihaljevič, Ondřej Šebek, Cécile Quantin, Jérémie Garnier
Publikováno v:
Applied Geochemistry
Applied Geochemistry, Elsevier, 2016, 64, pp.118-127 (IF 2,227). ⟨10.1016/j.apgeochem.2015.09.019⟩
Applied Geochemistry, Elsevier, 2016, 64, pp.118-127 (IF 2,227). ⟨10.1016/j.apgeochem.2015.09.019⟩
International audience; The laterite nickel (Ni) ore smelting operation in Niquelândia (Goiás state, Brazil) produced large amounts of smelting wastes, stockpiled on dumps (slags) and in settling ponds (fly ash). In this study we present data on th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0206b4d1b4014e0675ba8d7615617d6a
https://doi.org/10.1016/j.apgeochem.2015.09.019
https://doi.org/10.1016/j.apgeochem.2015.09.019
Autor:
Vojtěch Ettler, Michaela Selmi Wallisová, Jan Zavřel, Ondřej Šebek, Martin Mihaljevič, Zdenek Johan
Publikováno v:
Journal of Archaeological Science. 53:72-83
Archaeological investigation of the Na Slupi site in the central part of Prague (the capital of the Czech Republic) and located in the vicinity of Vysehrad Castle has demonstrated the presence of early medieval (12th century) large-scale smelting of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b6f893f8751ace4be0bd5cdefa12218
https://doi.org/10.1016/j.jas.2014.10.007
https://doi.org/10.1016/j.jas.2014.10.007
Autor:
Vojtěch Ettler, Zdenek Johan
Publikováno v:
Applied Geochemistry. 40:97-103
Lead slags from two different metallurgical technologies (primary slag from Pb-ore processing and secondary slag from car battery recycling) were submitted to 12-year batch leaching at a L/S ratio of 10 and the leaching data were compared with the pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1374121c9506bb46fc32f2090419174a
https://doi.org/10.1016/j.apgeochem.2013.11.001
https://doi.org/10.1016/j.apgeochem.2013.11.001
Autor:
Zdenek Johan, Imasiku Nyambe, Ondra Sracek, Martin Mihaljevič, Ben Mapani, Vojtěch Ettler, Bohdan Kříbek, Fred Kamona, Aleš Vaněk, František Veselovský, Vladimír Majer, Vít Penížek
Publikováno v:
The Science of the total environment.
We studied the heavy mineral fraction, separated from mining- and smelter-affected topsoils, from both a humid subtropical area (Mufulira, Zambian Copperbelt) and a hot semi-arid area (Tsumeb, Namibia). High concentrations of metal(loid)s were detect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8af79fed5fb1ba948ade5b3181246f1f
https://pubmed.ncbi.nlm.nih.gov/27139305
https://pubmed.ncbi.nlm.nih.gov/27139305
Publikováno v:
The Canadian Mineralogist
The Canadian Mineralogist, Mineralogical Association of Canada, 2012, 50 (4), pp.1131-1148. ⟨10.3749/canmin.50.4.1131⟩
The Canadian Mineralogist, Mineralogical Association of Canada, 2012, 50 (4), pp.1131-1148. ⟨10.3749/canmin.50.4.1131⟩
International audience; A 1596-m-deep borehole (CS-1) located in the central part of the Cinovec (Zinnwald) granite cupola mineralized in Sn and W intersected zinnwaldite granite (ZG) followed by lithian annite ("protolithionite") granite (PG). These
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a34d2d18c0e72a1a80abc9bd843bc9e5
https://doi.org/10.3749/canmin.50.4.1131
https://doi.org/10.3749/canmin.50.4.1131
Publikováno v:
European Journal of Mineralogy
European Journal of Mineralogy, Copernicus, 2009, 21 (4), pp.P. 837-854. ⟨10.1127/0935-1221/2009/0021-1942⟩
European Journal of Mineralogy, Copernicus, 2009, 21 (4), pp.P. 837-854. ⟨10.1127/0935-1221/2009/0021-1942⟩
International audience; The temperature evolution and crystallization sequences in matte and speiss from Pb metallurgy at Príbram (Czech Republic) were determined using a combination of microscopic observations (optical microscopy, SEM/EDS), chemica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42db6fdddbda765bee086587a7df9402
https://doi.org/10.1127/0935-1221/2009/0021-1942
https://doi.org/10.1127/0935-1221/2009/0021-1942
Publikováno v:
Archaeometry. 51:987-1007
Slags from the Pb/Ag medieval (14th century) smelting plant located at Bohutin, Přibram district, Czech Republic, were studied from the mineralogical and geochemical points of view. Two types of slags were distinguished: (i) quenched slags formed ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae4224201855ddf7707693ce91454e59
https://doi.org/10.1111/j.1475-4754.2008.00455.x
https://doi.org/10.1111/j.1475-4754.2008.00455.x
Autor:
Zdenek Johan, Vojtěch Ettler
Publikováno v:
Comptes Rendus Geoscience. 335:1005-1012
The mattes resulting from lead smelting have been studied in order to determine the distribution of heavy metals and metalloids in primary phases. The chemical analysis (EPMA) revealed the presence of various metals (Pb, Sb, Cu), sulphides (galena, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3d1715a50cad216f4a0b2ff3711addd
https://doi.org/10.1016/j.crte.2003.09.005
https://doi.org/10.1016/j.crte.2003.09.005
Publikováno v:
Comptes Rendus Geoscience. 335:1013-1020
The natural alteration products developed on mattes from lead metallurgy were determined: oxides and hydroxides (HFO, Cu(OH) 2 ), sulphates (thenardite, gypsum), hydroxysulphates (jarosite, beaverite, brochantite) and carbonates (cerussite, malachite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc5fbaf9364db34118aef720a2c6a5da
https://doi.org/10.1016/j.crte.2003.09.006
https://doi.org/10.1016/j.crte.2003.09.006
Autor:
V. Johan, Zdenek Johan
Publikováno v:
Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science. 332:307-313
The zonation of Cinovec granite cupola results from a transformation protolithionite → zinnwaldite due to the interaction with a F-rich fluid. This is a major metallogenic process leading to the release of Ti, Sn, Nb, Ta and W from the protolithion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27374521c78a7d52f68034a2251a8f49
https://doi.org/10.1016/s1251-8050(01)01541-5
https://doi.org/10.1016/s1251-8050(01)01541-5