Crystal structure of synthetic “magnesiorietveldite”, Raman
spectroscopy data and bond-valence approach to the svornostite
group of minerals

J 2025

Crystal structure of synthetic “magnesiorietveldite”, Raman spectroscopy data and bond-valence approach to the svornostite group of minerals

PLASIL, Jakub; Radek ŠKODA; Anthony R. KAMPF; Ivan NEMEC; Nicolas MEISSER et al.

Základní údaje

Originální název

Crystal structure of synthetic “magnesiorietveldite”, Raman spectroscopy data and bond-valence approach to the svornostite group of minerals

Autoři

PLASIL, Jakub; Radek ŠKODA; Anthony R. KAMPF; Ivan NEMEC; Nicolas MEISSER a Georges FAVREAU

Vydání

JOURNAL OF GEOSCIENCES, PRAHA 1, CESKA GEOLOGICKA SPOLECNOST, 2025, 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: 1.300 v roce 2024

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/25:00144058

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

magnesiorietveldite; svornostite group; uranyl sulfate; crystal structure; Raman spectroscopy

Štítky

14315010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 27. 3. 2026 09:03, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

The new synthetic counterpart of a potentially new member of the svornostite group of minerals, "magnesiorietveldite", ideally Mg(UO2)(SO4)(2)(H2O)(5), is orthorhombic, space group Pmn2(1), a = 12.7950(9), b = 8.3288(4), c = 11.2962(4) & Aring;, V = 1203.80(11) & Aring;(3) and Z = 2. The crystal structure (R-1 = 0.0168 for 3113 I > 3 sigma I reflections) contains uranyl-sulfate chains that are linked into sheets by M1O(2)(H2O)(4 )and M2O(2)(H2O)(4) octahedra, where Mg is a dominant cation over Zn at both sites. The structure is well known and has already been described for other members of the svornostite group; the fundamental building unit - an infinite [(UO2)(SO4)(2)(H2O)](2-) chain - is common in several uranyl minerals and synthetic compounds. Synthetic "magnesiorietveldite" was obtained after treatment of a specimen containing pitchblende with sulfuric acid. Electron microprobe analyses yielded the empirical formula (Mg0.63Zn0.22Cu0.09Fe0.05)(& sum;0.99)(UO2)(SO4)2 & centerdot;5H(2)O, confirming the predominance of Mg over the other divalent cations. Infrared and Raman spectroscopy confirmed the presence of structurally non-equivalent molecular H2O and sulfate tetrahedra. We append an extensive discussion on the role of molecular H2O in the svornostite-group of minerals based on the bond-valence approach.

Návaznosti

EF16_026/0008459, projekt VaV

Název: Dlouhodobý výzkum geochemických bariér pro ukládání jaderného odpadu

Citovat

PLASIL, Jakub; Radek ŠKODA; Anthony R. KAMPF; Ivan NEMEC; Nicolas MEISSER a Georges FAVREAU. Crystal structure of synthetic “magnesiorietveldite”, Raman spectroscopy data and bond-valence approach to the svornostite group of minerals. JOURNAL OF GEOSCIENCES. PRAHA 1: CESKA GEOLOGICKA SPOLECNOST, 2025, roč. 70, č. 3, s. 163-176. ISSN 1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.0047.25.

@article{2563204,
   author = {Plasil, Jakub and Škoda, Radek and Kampf, Anthony R. and Nemec, Ivan and Meisser, Nicolas and Favreau, Georges},
   article_location = {PRAHA 1},
   article_number = {3},
   doi = {https://doi.org/10.3190/jgeosci.0047.25},
   keywords = {magnesiorietveldite; svornostite group; uranyl sulfate; crystal structure; Raman spectroscopy},
   language = {eng},
   issn = {1802-6222},
   journal = {JOURNAL OF GEOSCIENCES},
   title = {Crystal structure of synthetic “magnesiorietveldite”, Raman spectroscopy data and bond-valence approach to the svornostite group of minerals},
   url = {https://www.jgeosci.org/detail/jgeosci.0047.25/affiliations},
   volume = {70},
   year = {2025}
}

TY  - JOUR
ID  - 2563204
AU  - Plasil, Jakub - Škoda, Radek - Kampf, Anthony R. - Nemec, Ivan - Meisser, Nicolas - Favreau, Georges
PY  - 2025
TI  - Crystal structure of synthetic “magnesiorietveldite”, Raman spectroscopy data and bond-valence approach to the svornostite group of minerals
JF  - JOURNAL OF GEOSCIENCES
VL  - 70
IS  - 3
SP  - 163-176
EP  - 163-176
PB  - CESKA GEOLOGICKA SPOLECNOST
SN  - 18026222
KW  - magnesiorietveldite
KW  - svornostite group
KW  - uranyl sulfate
KW  - crystal structure
KW  - Raman spectroscopy
UR  - https://www.jgeosci.org/detail/jgeosci.0047.25/affiliations
N2  - The new synthetic counterpart of a potentially new member of the svornostite group of minerals, "magnesiorietveldite", ideally Mg(UO2)(SO4)(2)(H2O)(5), is orthorhombic, space group Pmn2(1), a = 12.7950(9), b = 8.3288(4), c = 11.2962(4) & Aring;, V = 1203.80(11) & Aring;(3) and Z = 2. The crystal structure (R-1 = 0.0168 for 3113 I > 3 sigma I reflections) contains uranyl-sulfate chains that are linked into sheets by M1O(2)(H2O)(4 )and M2O(2)(H2O)(4) octahedra, where Mg is a dominant cation over Zn at both sites. The structure is well known and has already been described for other members of the svornostite group; the fundamental building unit - an infinite [(UO2)(SO4)(2)(H2O)](2-) chain - is common in several uranyl minerals and synthetic compounds. Synthetic "magnesiorietveldite" was obtained after treatment of a specimen containing pitchblende with sulfuric acid. Electron microprobe analyses yielded the empirical formula (Mg0.63Zn0.22Cu0.09Fe0.05)(& sum;0.99)(UO2)(SO4)2 & centerdot;5H(2)O, confirming the predominance of Mg over the other divalent cations. Infrared and Raman spectroscopy confirmed the presence of structurally non-equivalent molecular H2O and sulfate tetrahedra. We append an extensive discussion on the role of molecular H2O in the svornostite-group of minerals based on the bond-valence approach.
ER  -

PLASIL, Jakub; Radek ŠKODA; Anthony R. KAMPF; Ivan NEMEC; Nicolas MEISSER a Georges FAVREAU. Crystal structure of synthetic “magnesiorietveldite”, Raman spectroscopy data and bond-valence approach to the svornostite group of minerals. \textit{JOURNAL OF GEOSCIENCES}. PRAHA 1: CESKA GEOLOGICKA SPOLECNOST, 2025, roč.~70, č.~3, s.~163-176. ISSN~1802-6222. Dostupné z: https://doi.org/10.3190/jgeosci.0047.25.

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