About: Ferrotapiolite as a pseudomorph of stibiotantalite from the Laštovičky lepidolite pegmatite, Czech Republic; an example of hydrothermal alteration at constant Ta/(Ta+Nb)     Goto   Sponge   NotDistinct   Permalink

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Description
  • Ferrotapiolit jako pseudomorfóza po stibiotantalitu z lepidolitového pegmatitu v Laštovičkách, příklad hydrotermální alterace v stabilním Ta/(Ta+Nb), při alteraci nedochází ke změně Ta a Nb (cs)
  • Dark brown porous ferrotapiolite is a dominant alteration product in pseudomorphs after primary stibiotantalite from the lepidolite pegmatite at Laštovičky, western Moravia, Czech Republic. Two compositionally distinct varieties of ferrotapiolite were recognized a volumetrically dominant Fe3+-rich phase and a very rare Sb-rich phase. Niobium-rich ferrotapiolite, with up to 17.51 wt.% Nb2O5 (0.61 apfu), is highly heterogeneous with Ta/(Ta+Nb) of 0.69 to 0.84 and Mn/(Mn+Fe) of 0.01 to 0.05; Fe2O3calc. 3.09 wt.% (0.18 Fe3+ apfu; ~ 0.16 to 0.22 Fe3+ apfu from Mössbauer spectroscopy) in the ferrian, and Sb2O3 9.87 wt.% (0.34 Sb3+ apfu) in antimonoan variety. The unit-cell dimensions of ferrian ferrotapiolite a = 4.746-4.757 Å and c = 9.198-9.244 Å calculated from X-ray powder diffraction data indicate highly variable degrees of structural order. The substitution NbTa-1 is dominant; the minor substitution Fe3+3Fe2+-2R5+-1 typical of the ferrian ferrotapiolite strongly suggests incorporation of Fe3+ into the
  • Dark brown porous ferrotapiolite is a dominant alteration product in pseudomorphs after primary stibiotantalite from the lepidolite pegmatite at Laštovičky, western Moravia, Czech Republic. Two compositionally distinct varieties of ferrotapiolite were recognized a volumetrically dominant Fe3+-rich phase and a very rare Sb-rich phase. Niobium-rich ferrotapiolite, with up to 17.51 wt.% Nb2O5 (0.61 apfu), is highly heterogeneous with Ta/(Ta+Nb) of 0.69 to 0.84 and Mn/(Mn+Fe) of 0.01 to 0.05; Fe2O3calc. 3.09 wt.% (0.18 Fe3+ apfu; ~ 0.16 to 0.22 Fe3+ apfu from Mössbauer spectroscopy) in the ferrian, and Sb2O3 9.87 wt.% (0.34 Sb3+ apfu) in antimonoan variety. The unit-cell dimensions of ferrian ferrotapiolite a = 4.746-4.757 Å and c = 9.198-9.244 Å calculated from X-ray powder diffraction data indicate highly variable degrees of structural order. The substitution NbTa-1 is dominant; the minor substitution Fe3+3Fe2+-2R5+-1 typical of the ferrian ferrotapiolite strongly suggests incorporation of Fe3+ into the (en)
Title
  • Ferrotapiolite as a pseudomorph of stibiotantalite from the Laštovičky lepidolite pegmatite, Czech Republic; an example of hydrothermal alteration at constant Ta/(Ta+Nb)
  • Ferrotapiolite as a pseudomorph of stibiotantalite from the Laštovičky lepidolite pegmatite, Czech Republic; an example of hydrothermal alteration at constant Ta/(Ta+Nb) (en)
  • Ferrotapiolit jako pseudomorfóza po stibiotantalitu z lepidolitového pegmatitu v Laštovičkách, příklad hydrotermální alterace v stabilním Ta/(Ta+Nb) (cs)
skos:prefLabel
  • Ferrotapiolite as a pseudomorph of stibiotantalite from the Laštovičky lepidolite pegmatite, Czech Republic; an example of hydrothermal alteration at constant Ta/(Ta+Nb)
  • Ferrotapiolite as a pseudomorph of stibiotantalite from the Laštovičky lepidolite pegmatite, Czech Republic; an example of hydrothermal alteration at constant Ta/(Ta+Nb) (en)
  • Ferrotapiolit jako pseudomorfóza po stibiotantalitu z lepidolitového pegmatitu v Laštovičkách, příklad hydrotermální alterace v stabilním Ta/(Ta+Nb) (cs)
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  • RIV/00216224:14310/04:00011197!RIV09-AV0-14310___
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  • P(IAA3046002), P(RK99P03OMG014)
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  • 4
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  • 564307
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  • RIV/00216224:14310/04:00011197
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  • Ferrotapiolite as a pseudomorph of stibiotantalite from the Laštovičky lepidolite pegmatite; Czech Republic; an example of hydrothermal alteration at constant Ta/(Ta+Nb) (en)
http://linked.open.../riv/klicoveSlovo
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  • CA - Kanada
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  • [5DEBAA1D530A]
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  • Canadian Mineralogist
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  • 42
http://linked.open...iv/tvurceVysledku
  • Cempírek, Jan
  • Filip, Jan
  • Novák, Milan
  • Černý, Petr
  • Šrein, Vladimír
http://linked.open...ain/vavai/riv/wos
  • 000224260900015
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  • 0008-4476
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  • 14310
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