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

Result code in 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>

Result on the web

<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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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10504 - Mineralogy

Project

<a href="/en/project/GA17-09161S" target="_blank" >GA17-09161S: Crystal structures, chemistry and stability of arsenate and sulfate minerals</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Name of the periodical

Bulletin Mineralogie Petrologie

ISSN

2570-7337

e-ISSN

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Volume of the periodical

27

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

8

Pages from-to

411-418

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85078288678