New data on uranyl sulphate mineral shumwayite from Jáchymov - a Raman spectroscopy study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F19%3A10134737" target="_blank" >RIV/00023272:_____/19:10134737 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.bullmineral.cz/paper/225" target="_blank" >http://www.bullmineral.cz/paper/225</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

New data on uranyl sulphate mineral shumwayite from Jáchymov - a Raman spectroscopy study

Popis výsledku v původním jazyce

Jáchymov (Czech Republic) is the second locality of hydrated uranyl-sulphate mineral shumwayite in the world. Shumwayite occurs as rich dark orange crystalline coatings composed of crystals - thin elongated blades up to 100 mm in size, but usually as thin tables only of about 20 μm in size, on strongly weathered fragment of gangue. It is associated with rietveldite, rozenite and as yet unnamed Al-uranyl sulphate, uranyl phosphate and Fe-Zn uranyl sulphate-vanadate. Individual shumwayite crystals are translucent to transparent with vitreous lustre. It does not exhibit fluorescence under either long- or short-wave ultraviolet radiation. The quantitative chemical composition of shumwayite sample is in line with the ideal stoichiometry of UO2:SO4 = 1:1; but also minor contents of Fe and Zn were identified. Shumwayite is monoclinic, the space group P21/c, with the unit-cell parameters refined from X-ray powder diffraction data: a 6.738(2), b 12.482(5), c 16.865(6) Å, β 91.00(3)o and V 1418.3(7) Å3. Raman spectroscopy documented the presence of both (UO2)2+ and (SO4)2- units in the crystal structure of shumwayite. Multiple bands connected with vibrations of water molecules suggest that molecular water is involved in different coordination environments in the structure of shumwayite with distinct hydrogen-bond strengths.

Název v anglickém jazyce

New data on uranyl sulphate mineral shumwayite from Jáchymov - a Raman spectroscopy study

Popis výsledku anglicky

Jáchymov (Czech Republic) is the second locality of hydrated uranyl-sulphate mineral shumwayite in the world. Shumwayite occurs as rich dark orange crystalline coatings composed of crystals - thin elongated blades up to 100 mm in size, but usually as thin tables only of about 20 μm in size, on strongly weathered fragment of gangue. It is associated with rietveldite, rozenite and as yet unnamed Al-uranyl sulphate, uranyl phosphate and Fe-Zn uranyl sulphate-vanadate. Individual shumwayite crystals are translucent to transparent with vitreous lustre. It does not exhibit fluorescence under either long- or short-wave ultraviolet radiation. The quantitative chemical composition of shumwayite sample is in line with the ideal stoichiometry of UO2:SO4 = 1:1; but also minor contents of Fe and Zn were identified. Shumwayite is monoclinic, the space group P21/c, with the unit-cell parameters refined from X-ray powder diffraction data: a 6.738(2), b 12.482(5), c 16.865(6) Å, β 91.00(3)o and V 1418.3(7) Å3. Raman spectroscopy documented the presence of both (UO2)2+ and (SO4)2- units in the crystal structure of shumwayite. Multiple bands connected with vibrations of water molecules suggest that molecular water is involved in different coordination environments in the structure of shumwayite with distinct hydrogen-bond strengths.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

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OECD FORD obor

10504 - Mineralogy

Projekt

<a href="/cs/project/GA17-09161S" target="_blank" >GA17-09161S: Krystalové struktury, chemismus a stabilita arseničnanových a síranových minerálů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Bulletin Mineralogie Petrologie

ISSN

2570-7337

e-ISSN

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Svazek periodika

27

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

411-418

Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-85078288678