Zobrazeno 1 - 10 of 54 pro vyhledávání: '"Bogusław Bagiński"'
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Akademický článek
Petrographic Opinion (Appendix)
Autor: Jan Dzierżek, Bogusław Bagiński
Publikováno v: Archaeologia Lituana, Vol 5 (2004)
Externí odkaz: https://doaj.org/article/255a7c29c3bb4912bb6fc08425e180f8
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Extreme Alteration of Chevkinite-(Ce) by Pb-CO2-Rich Fluids: Evidence from the White Tundra Pegmatite, Keivy Massif, Kola Peninsula
Autor: Ray Macdonald, Bogusław Bagiński, Marcin Stachowicz, Dmitry Zozulya, Jakub Kotowski, Petras Jokubauskas
Publikováno v: Minerals; Volume 12; Issue 8; Pages: 989
An unusual hydrothermal alteration scheme was presented for chevkinite-(Ce) from the White Tundra pegmatite (2656 ± 5 Ma), Keivy massif, Kola Peninsula. Pb-CO2-rich fluids initially removed REE and Y from the chevkinite-(Ce), with enrichment in Pb a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec566f113c63e8d915e6815faf0dbe35
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4
Cation ordering, valence states, and symmetry breaking in the crystal-chemically complex mineral chevkinite-(Ce): Recrystallization, transformation, and metamict states in chevkinite
Autor: Ray Macdonald, Marcin Stachowicz, Mark D. Welch, Krzysztof Woźniak, Pavel M. Kartashov, Bogusław Bagiński
Publikováno v: American Mineralogist. 104:1481-1486
Annealing is commonly used in the recrystallization of metamict minerals in an attempt to reconstruct the original structure. Annealing at 750 °C of Nb-rich chevkinite-(Ce) from the Biraya rare-metal deposit, Russia, resulted in the structural trans
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3964677ce4d8c55367aa516222b88597
https://doi.org/10.2138/am-2019-6458
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5
Petrography and mineral chemistry of the Varena Iron Ore deposit, southeastern Lithuania: implications for the evolution of carbonate and silicate rocks and ore mineralization
Autor: Gražina Skridlaitė, Laurynas Siliauskas, Bogusław Bagiński, Sabina Prušinskienė
Publikováno v: Baltica. 32:107-126
The large Varena Iron Ore deposit of southeast Lithuania lies beneath 200–400 m thick sedimentary cover in the East European Craton. Several drilling projects have revealed that it contains ca. 70–200 million tons of iron ore. A metasomatic origi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c02e13cabe1389431a443d9f58d16602
https://doi.org/10.5200/baltica.2019.1.9
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Composition, paragenesis, and alteration of the chevkinite group of minerals
Autor: Marcin Stachowicz, Harvey E. Belkin, Bogusław Bagiński, Ray Macdonald
Publikováno v: American Mineralogist. 104:348-369
The chevkinite-group minerals (CGM) are dominantly monoclinic REE-Ti-Fe sorosilicates [(REE, Ca)(4)Fe2+(Fe2+, Fe3+, Ti)(2)Ti-2(Si2O7)(2)O-8)], with REE2O3 contents up to similar to 50 wt%, but members with predominant Mg, Al, Mn, Cr, Sr, or Zr in one
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c54e22b90f1fca119f80a3d1fd4867a6
https://doi.org/10.2138/am-2019-6772
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