Manganrockbridgeite from the Jocão claim, Conselheiro Pena,
Minas Gerais, Brazil: chemistry, spectroscopic and structural
data

J 2024

Manganrockbridgeite from the Jocão claim, Conselheiro Pena, Minas Gerais, Brazil: chemistry, spectroscopic and structural data

TVRDÝ, Jaromír, Luboš VRTIŠKA, Jan FILIP, Zdeněk DOLNÍČEK, Radek ŠKODA et. al.

Základní údaje

Originální název

Manganrockbridgeite from the Jocão claim, Conselheiro Pena, Minas Gerais, Brazil: chemistry, spectroscopic and structural data

Autoři

TVRDÝ, Jaromír (203 Česká republika, garant, domácí), Luboš VRTIŠKA (203 Česká republika), Jan FILIP (203 Česká republika), Zdeněk DOLNÍČEK (203 Česká republika), Radek ŠKODA (203 Česká republika, domácí), Martin PETR a Radana MALÍKOVÁ (203 Česká republika, domácí)

Vydání

Journal of Geosciences, Czech Geological Survey, 2024, 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: 1.400 v roce 2022

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.3190/jgeosci.387

UT WoS

001298823300002

Klíčová slova anglicky

manganrockbridgeite; phosphate minerals; Jocão pegmatite; Minas Gerais; Brazil

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 27. 9. 2024 14:53, Mgr. Marie Šípková, DiS.

Anotace

V originále

The world's second occurrence of the recently described manganrockbridgeite was found in a mineral assemblage in the Jocão (Cigana) pegmatite, Conselheiro Pena district, Minas Gerais (Brazil). Manganrockbridgeite forms green botryoidal-crystalline crusts with a velvety surface covering the walls of leached cavities in triphylite replaced by correianevesite and Mn-rich vivianite. The outer zone is significantly richer in Mn than the inner zone where the manganrockbridgeite passes to frondelite. Other associated minerals are hureaulite and kenngottite-like phosphate. Empirical formulae based on EPMA, Mössbauer and XPS spectroscopy are (Mn1.36Fe2+0.46Fe3+0.09Ca0.03Mg0.01□0.05)Σ2.00Fe3+2.95(PO4)3.00(OH)3.84(H2O)1.16 for the outer zone and (Mn1.03Fe2+0.49Fe3+0.29Ca0.03Mg0.02□0.14)Σ2.00Fe3+2.94(PO4)3.00(OH)3.81(H2O)1.19 for the inner zone of aggregates. Raman spectra and assignment of individual decomposed bands to vibrational modes show a good agreement with data published for frondelite from the Jocão locality. By powder diffraction data the studied manganrockbridgeite corresponds to the type material from Hagendorf-Süd, Germany. Unit-cell parameters for space group P21/m are a = 5.195(2) Å, b = 16.936(4) Å, c = 7.452(2) Å, β = 110.25(3)° and V = 615.1(4) Å3.

Návaznosti

MUNI/A/1271/2022, interní kód MU

Název: Geologické procesy Českém masivu a Západních Karpat

Investor: Masarykova univerzita, Geologické procesy Českém masivu a Západních Karpat

Citovat

TVRDÝ, Jaromír, Luboš VRTIŠKA, Jan FILIP, Zdeněk DOLNÍČEK, Radek ŠKODA, Martin PETR a Radana MALÍKOVÁ. Manganrockbridgeite from the Jocão claim, Conselheiro Pena, Minas Gerais, Brazil: chemistry, spectroscopic and structural data. Journal of Geosciences. Czech Geological Survey, 2024, roč. 69, č. 2, s. 87-98. ISSN 1802-6222. Dostupné z: https://dx.doi.org/10.3190/jgeosci.387.

@article{2420223,
   author = {Tvrdý, Jaromír and Vrtiška, Luboš and Filip, Jan and Dolníček, Zdeněk and Škoda, Radek and PETR, Martin and Malíková, Radana},
   article_number = {2},
   doi = {http://dx.doi.org/10.3190/jgeosci.387},
   keywords = {manganrockbridgeite; phosphate minerals; Jocão pegmatite; Minas Gerais; Brazil},
   language = {eng},
   issn = {1802-6222},
   journal = {Journal of Geosciences},
   title = {Manganrockbridgeite from the Jocão claim, Conselheiro Pena, Minas Gerais, Brazil: chemistry, spectroscopic and structural data},
   url = {http://www.jgeosci.org/content/jgeosci_387_Tvrdy.pdf},
   volume = {69},
   year = {2024}
}

TY  - JOUR
ID  - 2420223
AU  - Tvrdý, Jaromír - Vrtiška, Luboš - Filip, Jan - Dolníček, Zdeněk - Škoda, Radek - PETR, Martin - Malíková, Radana
PY  - 2024
TI  - Manganrockbridgeite from the Jocão claim, Conselheiro Pena, Minas Gerais, Brazil: chemistry, spectroscopic and structural data
JF  - Journal of Geosciences
VL  - 69
IS  - 2
SP  - 87-98
EP  - 87-98
PB  - Czech Geological Survey
SN  - 18026222
KW  - manganrockbridgeite
KW  - phosphate minerals
KW  - Jocão pegmatite
KW  - Minas Gerais
KW  - Brazil
UR  - http://www.jgeosci.org/content/jgeosci_387_Tvrdy.pdf
N2  - The world's second occurrence of the recently described manganrockbridgeite was found in a mineral assemblage in the Jocão (Cigana) pegmatite, Conselheiro Pena district, Minas Gerais (Brazil). Manganrockbridgeite forms green botryoidal-crystalline crusts with a velvety surface covering the walls of leached cavities in triphylite replaced by correianevesite and Mn-rich vivianite. The outer zone is significantly richer in Mn than the inner zone where the manganrockbridgeite passes to frondelite. Other associated minerals are hureaulite and kenngottite-like phosphate. Empirical formulae based on EPMA, Mössbauer and XPS spectroscopy are (Mn1.36Fe2+0.46Fe3+0.09Ca0.03Mg0.01□0.05)Σ2.00Fe3+2.95(PO4)3.00(OH)3.84(H2O)1.16 for the outer zone and (Mn1.03Fe2+0.49Fe3+0.29Ca0.03Mg0.02□0.14)Σ2.00Fe3+2.94(PO4)3.00(OH)3.81(H2O)1.19 for the inner zone of aggregates. Raman spectra and assignment of individual decomposed bands to vibrational modes show a good agreement with data published for frondelite from the Jocão locality. By powder diffraction data the studied manganrockbridgeite corresponds to the type material from Hagendorf-Süd, Germany. Unit-cell parameters for space group P21/m are a = 5.195(2) Å, b = 16.936(4) Å, c = 7.452(2) Å, β = 110.25(3)° and V = 615.1(4) Å3.
ER  -

TVRDÝ, Jaromír, Luboš VRTIŠKA, Jan FILIP, Zdeněk DOLNÍČEK, Radek ŠKODA, Martin PETR a Radana MALÍKOVÁ. Manganrockbridgeite from the Jocão claim, Conselheiro Pena, Minas Gerais, Brazil: chemistry, spectroscopic and structural data. \textit{Journal of Geosciences}. Czech Geological Survey, 2024, roč.~69, č.~2, s.~87-98. ISSN~1802-6222. Dostupné z: https://dx.doi.org/10.3190/jgeosci.387.

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