Ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O, a mixed-valence iron
member of the beraunite series, from the Gravel Hill mine,
Perranzabuloe, Cornwall, UK

J 2022

Ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, UK

TVRDÝ, Jaromír, Jakub PLÁŠIL, Luboš VRTIŠKA, Jiří SEJKORA, Radek ŠKODA et. al.

Základní údaje

Originální název

Ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, UK

Autoři

TVRDÝ, Jaromír (203 Česká republika, garant, domácí), Jakub PLÁŠIL (203 Česká republika), Luboš VRTIŠKA (203 Česká republika, domácí), Jiří SEJKORA (203 Česká republika), Radek ŠKODA (203 Česká republika, domácí), Zdeněk DOLNÍČEK (203 Česká republika), Martin PETR a František VESELOVSKÝ (203 Česká republika)

Vydání

Mineralogical Magazine, Cambridge University Press, 2022, 0026-461X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10504 Mineralogy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.700

Kód RIV

RIV/00216224:14310/22:00125699

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1180/mgm.2022.15

UT WoS

000799395000001

Klíčová slova anglicky

ferroberaunite; new mineral; phosphate; crystal structure; Raman spectroscopy; XPS spectroscopy; Cornwall

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 6. 1. 2023 15:20, Mgr. Marie Šípková, DiS.

Anotace

V originále

The new mineral ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O (IMA2021–36; symbol: Fbru), occurs in cavities of ‘limonite’ iron ore from the Gravel Hill mine, Perranzabuloe, Cornwall, England, United Kingdom. Its flattened prismatic crystals up to 400 μm long are dark green to olive green, transparent to translucent, with a vitreous lustre, pearly on cleavages. The Mohs hardness is ~3–4. The density measured by the flotation method is 2.94(2) g·cm–3, the calculated density is 2.907 g·cm–3. Ferroberaunite is biaxial (–), with α = 1.736(2), β = 1.765(3), γ = 1.786(5) at 589 nm, 2Vmeas. = 68(3)°, 2Vcalc. = 79°; dispersion of optical axes is strong, r > v; orientation is Y = b; X ≈ a, Z ≈ c. Pleochroism is strong: X = bluish-green >> Z = green > Y = yellow. Electron-microprobe analyses gave the empirical formula (Fe2+0.75Ca0.01Mn0.02Fe3+0.22)Σ1.00(Fe3+4.88Al0.04)Σ4.92(PO4)4O0.11(OH)4.76·6H2O. Ferroberaunite is monoclinic, C2/c, with a = 20.8708(3), b = 5.1590(8), c = 19.2263(3) Å, β = 93.3186(17)°, V = 2066.7(3) Å3 and Z = 4. The eight strongest lines in the powder X-ray diffraction pattern are [dmeas/Å (Irel. %) (hkl)]: 10.410 (100) (200), 9.606 (14) (002), 7.271 (11) (202 ̅), 5.203 (4) (400), 3.467 (12) (600), 3.325 (6) (602 ̅), 3.201 (6) (006), 2.600 (4) (800). The mineral is isostructural with beraunite, redefined recently as Fe3+6(PO4)4O(OH)4·6H2O.

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, Jakub PLÁŠIL, Luboš VRTIŠKA, Jiří SEJKORA, Radek ŠKODA, Zdeněk DOLNÍČEK, Martin PETR a František VESELOVSKÝ. Ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, UK. Mineralogical Magazine. Cambridge University Press, 2022, roč. 86, č. 3, s. 363-372. ISSN 0026-461X. Dostupné z: https://dx.doi.org/10.1180/mgm.2022.15.

@article{1848604,
   author = {Tvrdý, Jaromír and Plášil, Jakub and Vrtiška, Luboš and Sejkora, Jiří and Škoda, Radek and Dolníček, Zdeněk and Petr, Martin and Veselovský, František},
   article_number = {3},
   doi = {http://dx.doi.org/10.1180/mgm.2022.15},
   keywords = {ferroberaunite; new mineral; phosphate; crystal structure; Raman spectroscopy; XPS spectroscopy; Cornwall},
   language = {eng},
   issn = {0026-461X},
   journal = {Mineralogical Magazine},
   title = {Ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, UK},
   url = {http://doi.org/10.1180/mgm.2022.15},
   volume = {86},
   year = {2022}
}

TY  - JOUR
ID  - 1848604
AU  - Tvrdý, Jaromír - Plášil, Jakub - Vrtiška, Luboš - Sejkora, Jiří - Škoda, Radek - Dolníček, Zdeněk - Petr, Martin - Veselovský, František
PY  - 2022
TI  - Ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, UK
JF  - Mineralogical Magazine
VL  - 86
IS  - 3
SP  - 363-372
EP  - 363-372
PB  - Cambridge University Press
SN  - 0026461X
KW  - ferroberaunite
KW  - new mineral
KW  - phosphate
KW  - crystal structure
KW  - Raman spectroscopy
KW  - XPS spectroscopy
KW  - Cornwall
UR  - http://doi.org/10.1180/mgm.2022.15
N2  - The new mineral ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O (IMA2021–36; symbol: Fbru), occurs in cavities of ‘limonite’ iron ore from the Gravel Hill mine, Perranzabuloe, Cornwall, England, United Kingdom. Its flattened prismatic crystals up to 400 μm long are dark green to olive green, transparent to translucent, with a vitreous lustre, pearly on cleavages. The Mohs hardness is ~3–4. The density measured by the flotation method is 2.94(2) g·cm–3, the calculated density is 2.907 g·cm–3. Ferroberaunite is biaxial (–), with α = 1.736(2), β = 1.765(3), γ = 1.786(5) at 589 nm, 2Vmeas. = 68(3)°, 2Vcalc. = 79°; dispersion of optical axes is strong, r > v; orientation is Y = b; X ≈ a, Z ≈ c. Pleochroism is strong: X = bluish-green >> Z = green > Y = yellow. Electron-microprobe analyses gave the empirical formula (Fe2+0.75Ca0.01Mn0.02Fe3+0.22)Σ1.00(Fe3+4.88Al0.04)Σ4.92(PO4)4O0.11(OH)4.76·6H2O. Ferroberaunite is monoclinic, C2/c, with a = 20.8708(3), b = 5.1590(8), c = 19.2263(3) Å, β = 93.3186(17)°, V = 2066.7(3) Å3 and Z = 4. The eight strongest lines in the powder X-ray diffraction pattern are [dmeas/Å (Irel. %) (hkl)]: 10.410 (100) (200), 9.606 (14) (002), 7.271 (11) (202 ̅), 5.203 (4) (400), 3.467 (12) (600), 3.325 (6) (602 ̅), 3.201 (6) (006), 2.600 (4) (800). The mineral is isostructural with beraunite, redefined recently as Fe3+6(PO4)4O(OH)4·6H2O.
ER  -

TVRDÝ, Jaromír, Jakub PLÁŠIL, Luboš VRTIŠKA, Jiří SEJKORA, Radek ŠKODA, Zdeněk DOLNÍČEK, Martin PETR a František VESELOVSKÝ. Ferroberaunite, Fe2+Fe3+5(PO4)4(OH)5·6H2O, a mixed-valence iron member of the beraunite series, from the Gravel Hill mine, Perranzabuloe, Cornwall, UK. \textit{Mineralogical Magazine}. Cambridge University Press, 2022, roč.~86, č.~3, s.~363-372. ISSN~0026-461X. Dostupné z: https://dx.doi.org/10.1180/mgm.2022.15.

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