DC pole | Wartość | Język |
dc.contributor.author | Pieczka, Adam | - |
dc.contributor.author | Gołębiowska, Bożena | - |
dc.contributor.author | Jeleń, Piotr | - |
dc.contributor.author | Włodek, Adam | - |
dc.contributor.author | Szełęg, Eligiusz | - |
dc.contributor.author | Szuszkiewicz, Adam | - |
dc.date.accessioned | 2018-06-29T08:33:03Z | - |
dc.date.available | 2018-06-29T08:33:03Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Minerals, Vol. 8, iss. 4 (2018), art. no. 126 | pl_PL |
dc.identifier.issn | 2075-163X | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/5074 | - |
dc.description.abstract | Tourmalines are a group of minerals which may concentrate various accessory components, e.g., Cu, Ni, Zn, Bi, Ti, and Sn. The paper presents fluor-elbaite and elbaite from a dyke of the Julianna pegmatitic system at Piława Górna, at the NE margin of the Bohemian Massif, SW Poland, containing up to 6.32 and 7.37 wt % ZnO, respectively. Such high amounts of ZnO are almost two times higher than in the second most Zn-enriched tourmaline known to date. The compositions of the Zn-rich tourmalines from Piława Górna, studied by electron micropropy and Raman spectroscopy, correspond to the formulae:X(Na0.733Ca0.013□0.254)Y Σ1 (Al1.033Li0.792 Zn0.755Fe2+0.326Mn0.094)Z Σ3 Al6(TSi6O18)(BO3)V 3 (OH)W 3 (F0.654OH0.344), andX(Na0.779Ca0.015□0.206)Σ1 Y(Al1.061Li0.869Zn0.880Fe2+0.098Mn0.094)Z Σ3 Al6(TSi6O18)(BO3)V 3 (OH)W 3 (OH0.837F0.163), respectively, with Zn as one of the main octahedral occupants. A comparison with other tourmalines and associated Zn-rich fluor-elbaite and elbaite from the pegmatite indicates that atypically high Zn-enrichment is not a result of Zn-Fe fractionation, but dissolution and reprecipitation induced by a late (Na,Li,B,F)-bearing fluid within the assemblage of gahnite spinel and primary schorl-type tourmaline. This strongly suggests Na-Li-B-F metasomatism of gahnite-bearing mineral assemblages as that is the only environment that can promote crystallization of a hypothetical Zn-dominant tourmaline. The compositions of the Zn-rich fluor-elbaite and elbaite suggest three possible end-members for such a hypothetical tourmaline species: NaZn3Al6(Si6O18)(BO3)3(OH)3(OH), □(Zn2Al)Al6(Si6O18)(BO3)3(OH)3(OH) and Na(Zn2Al)Al6(Si6O18)(BO3)3(OH)3O by analogy with other tourmalines with divalent Y occupants, such as schorl/foitite/oxy-schorl and dravite/magnesio-foitite/oxy-dravite. | pl_PL |
dc.description.sponsorship | National Centre for Atmospheric Science | pl_PL |
dc.language.iso | en | pl_PL |
dc.relation | 2015/19/B/ST10/01809 | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | Elbaite | pl_PL |
dc.subject | Electron microprobe | pl_PL |
dc.subject | Fluor-elbaite | pl_PL |
dc.subject | Granitic pegmatites | pl_PL |
dc.subject | Piława Górna | pl_PL |
dc.subject | Raman spectroscopy | pl_PL |
dc.subject | Sudetes | pl_PL |
dc.subject | Tourmaline | pl_PL |
dc.subject | Zn-enrichment | pl_PL |
dc.title | Towards Zn-dominant tourmaline: A case of Zn-rich fluor-elbaite and elbaite from the julianna system at Piława Górna, Lower Silesia, SW Poland | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.3390/min8040126 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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