Ferraioloite from the Sítio do Castelo mine, Folgosinho
(Guarda, Portugal), description and Raman spectroscopy

J 2021

Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy

TVRDÝ, Jaromír; Jiří SEJKORA; Pierre ROSSEEL a Zdeněk DOLNÍČEK

Základní údaje

Originální název

Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy

Název česky

Ferraioloit z dolu Sítio do Castelo, Folgosinho (Guarda, Portugalsko)

Autoři

TVRDÝ, Jaromír (203 Česká republika, garant, domácí); Jiří SEJKORA (203 Česká republika); Pierre ROSSEEL (56 Belgie) a Zdeněk DOLNÍČEK (203 Česká republika)

Vydání

Journal of Geosciences, Czech Geological Survey, 2021, 1802-6222

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.778

Kód RIV

RIV/00216224:14310/21:00122852

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.3190/jgeosci.326

UT WoS

000718259900002

EID Scopus

2-s2.0-85119119935

Klíčová slova anglicky

ferraioloite; zinc phosphate; powder X-ray diffraction; chemical composition; Raman spectroscopy; supergene weathering

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 6. 12. 2021 15:15, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

A zinc phosphate corresponding to ferraioloite with low Mg and high Na cation contents in interlayer space was identified in samples from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal). It occurs as sky-blue, pearly lustrous, radial or irregular aggregates up to 1 mm in size composed of very thin elongated flaky crystals. The mineral is monoclinic, space group I2/m, with unit-cell parameters refined from X-ray powder diffraction data: a 25.417(7), b 6.342(4), c 15.186(5) Å, β 90.02(4) °, V 2448.0(1.7) Å3. The chemical composition generally agrees with published data for ferraioloite, but differs significantly in elements present at sites assumed to be in the interlayer of the crystal structure. The corresponding empirical formula based on 8 (PO)4 and 4 (OH) groups pfu is (Mg0.16Na0.15Ca0.09K0.01)Σ0.41Mn4.22(Fe2+1.64Fe3+1.15Al1.47)Σ4.26Zn3.87(PO4)8(OH)4(H2O)20. The Raman spectra and tentative assignment of observed bands are given. The most prominent bands are attributed to stretching and bending vibrations of phosphate tetrahedra and complex metal-centred polyhedra. Bands of O–H stretching vibrations are weak, and bending vibrations of water molecules were not observed. The origin of the mineral is related to in-situ supergene weathering of zwieselite-triplite and isokite-fluorapatite assemblages with admixtures of sphalerite.

Návaznosti

MUNI/A/1387/2018, interní kód MU

Název: Geologické a geoenvironmentální procesy východního okraje Českého masívu a jejich vývoj. (Akronym: GEOPROC)

Investor: Masarykova univerzita, Geologické a geoenvironmentální procesy východního okraje Českého masívu a jejich vývoj., DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty

Citovat

TVRDÝ, Jaromír; Jiří SEJKORA; Pierre ROSSEEL a Zdeněk DOLNÍČEK. Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy. Journal of Geosciences. Czech Geological Survey, 2021, roč. 66, č. 3, s. 139-146. ISSN 1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.326.

@article{1803706,
   author = {Tvrdý, Jaromír and Sejkora, Jiří and Rosseel, Pierre and Dolníček, Zdeněk},
   article_number = {3},
   doi = {https://doi.org/10.3190/jgeosci.326},
   keywords = {ferraioloite; zinc phosphate; powder X-ray diffraction; chemical composition; Raman spectroscopy; supergene weathering},
   language = {eng},
   issn = {1802-6222},
   journal = {Journal of Geosciences},
   title = {Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy},
   url = {http://www.jgeosci.org/detail/jgeosci.326},
   volume = {66},
   year = {2021}
}

TY  - JOUR
ID  - 1803706
AU  - Tvrdý, Jaromír - Sejkora, Jiří - Rosseel, Pierre - Dolníček, Zdeněk
PY  - 2021
TI  - Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy
JF  - Journal of Geosciences
VL  - 66
IS  - 3
SP  - 139-146
EP  - 139-146
PB  - Czech Geological Survey
SN  - 18026222
KW  - ferraioloite
KW  - zinc phosphate
KW  - powder X-ray diffraction
KW  - chemical composition
KW  - Raman spectroscopy
KW  - supergene weathering
UR  - http://www.jgeosci.org/detail/jgeosci.326
N2  - A zinc phosphate corresponding to ferraioloite with low Mg and high Na cation contents in interlayer space was identified in samples from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal). It occurs as sky-blue, pearly lustrous, radial or irregular aggregates up to 1 mm in size composed of very thin elongated flaky crystals. The mineral is monoclinic, space group I2/m, with unit-cell parameters refined from X-ray powder diffraction data: a 25.417(7), b 6.342(4), c 15.186(5) Å, β 90.02(4) °, V 2448.0(1.7) Å3. The chemical composition generally agrees with published data for ferraioloite, but differs significantly in elements present at sites assumed to be in the interlayer of the crystal structure. The corresponding empirical formula based on 8 (PO)4 and 4 (OH) groups pfu is (Mg0.16Na0.15Ca0.09K0.01)Σ0.41Mn4.22(Fe2+1.64Fe3+1.15Al1.47)Σ4.26Zn3.87(PO4)8(OH)4(H2O)20. The Raman spectra and tentative assignment of observed bands are given. The most prominent bands are attributed to stretching and bending vibrations of phosphate tetrahedra and complex metal-centred polyhedra. Bands of O–H stretching vibrations are weak, and bending vibrations of water molecules were not observed. The origin of the mineral is related to in-situ supergene weathering of zwieselite-triplite and isokite-fluorapatite assemblages with admixtures of sphalerite.
ER  -

TVRDÝ, Jaromír; Jiří SEJKORA; Pierre ROSSEEL a Zdeněk DOLNÍČEK. Ferraioloite from the Sítio do Castelo mine, Folgosinho (Guarda, Portugal), description and Raman spectroscopy. \textit{Journal of Geosciences}. Czech Geological Survey, 2021, roč.~66, č.~3, s.~139-146. ISSN~1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.326.

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