Chenowethite, rare Mg-uranyl-sulphate, from the Jáchymov ore district, Krušné hory Mountains (Czech Republic) - description and Raman spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F24%3A10136516" target="_blank" >RIV/00023272:_____/24:10136516 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/24:00601228

Výsledek na webu

<a href="http://www.bullmineral.cz/paper/download/348/fulltext" target="_blank" >http://www.bullmineral.cz/paper/download/348/fulltext</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.46861/bmp.32.037" target="_blank" >10.46861/bmp.32.037</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chenowethite, rare Mg-uranyl-sulphate, from the Jáchymov ore district, Krušné hory Mountains (Czech Republic) - description and Raman spectroscopy

Popis výsledku v původním jazyce

We studied a rare magnesium uranyl sulphate mineral, chenowethite, from the Jáchymov ore district, Krušné hory Mountains (Czech Republic). It was confirmed from the two samples originating from the Svornost mine in Jáchymov. Chenowethite forms rich crystalline aggregates on supergene-altered rocks in association with dark yellow to orange mineral of the zippeite group and white acicular crystals of gypsum. Its randomly arranged aggregates are composed of elongated thin tabular crystals up to 100 μm in length. Chenowethite is pale or bright yellow with a pale yellow streak and fluoresces greenish yellow, weak or dull under 254 nm and 366 nm UV-radiation, respectively. Chenowethite crystals are transparent to translucent and have an intensive vitreous luster. It is very brittle, and at least one system of perfect cleavage (along {010}) was observed. The quantitative chemical analyses of chenowethite agree well with the proposed ideal composition and correspond to the following empirical formulae (on the basis of 2 U atoms pfu) (Mg1.02Fe0.03Mn0.03)Σ1.08[(UO2)2(SO4)2.06(OH)2.04].11H2O (sample A) and (Mg0.92Fe0.11Mn0.04Zn0.01)Σ1.08[(UO2)2(SO4)1.96(SiO4)0.01(OH)2.23].11H2O (sample B). Chenowethite is orthorhombic, the space group Cmcm, with the unit-cell parameters refined from X-ray powder diffraction data: a 6.9329(8), b 19.0019(15), c 16.3298(15) Å and V 2151.2(3) Å3 (sample A) and a 6.937(3), b 19.019(5), c 16.348(6) Å and V 2156.8(1.1) Å3 (sample B). Vibrational (Raman and infrared) spectroscopy documents the presence of molecular water, uranyl and suphate units in the crystal structure of chenowethite.

Název v anglickém jazyce

Chenowethite, rare Mg-uranyl-sulphate, from the Jáchymov ore district, Krušné hory Mountains (Czech Republic) - description and Raman spectroscopy

Popis výsledku anglicky

We studied a rare magnesium uranyl sulphate mineral, chenowethite, from the Jáchymov ore district, Krušné hory Mountains (Czech Republic). It was confirmed from the two samples originating from the Svornost mine in Jáchymov. Chenowethite forms rich crystalline aggregates on supergene-altered rocks in association with dark yellow to orange mineral of the zippeite group and white acicular crystals of gypsum. Its randomly arranged aggregates are composed of elongated thin tabular crystals up to 100 μm in length. Chenowethite is pale or bright yellow with a pale yellow streak and fluoresces greenish yellow, weak or dull under 254 nm and 366 nm UV-radiation, respectively. Chenowethite crystals are transparent to translucent and have an intensive vitreous luster. It is very brittle, and at least one system of perfect cleavage (along {010}) was observed. The quantitative chemical analyses of chenowethite agree well with the proposed ideal composition and correspond to the following empirical formulae (on the basis of 2 U atoms pfu) (Mg1.02Fe0.03Mn0.03)Σ1.08[(UO2)2(SO4)2.06(OH)2.04].11H2O (sample A) and (Mg0.92Fe0.11Mn0.04Zn0.01)Σ1.08[(UO2)2(SO4)1.96(SiO4)0.01(OH)2.23].11H2O (sample B). Chenowethite is orthorhombic, the space group Cmcm, with the unit-cell parameters refined from X-ray powder diffraction data: a 6.9329(8), b 19.0019(15), c 16.3298(15) Å and V 2151.2(3) Å3 (sample A) and a 6.937(3), b 19.019(5), c 16.348(6) Å and V 2156.8(1.1) Å3 (sample B). Vibrational (Raman and infrared) spectroscopy documents the presence of molecular water, uranyl and suphate units in the crystal structure of chenowethite.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10504 - Mineralogy

Projekt

<a href="/cs/project/LM2018110" target="_blank" >LM2018110: Výzkumná infrastruktura CzechNanoLab</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

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

—

Svazek periodika

32

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

37-44

Kód UT WoS článku

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EID výsledku v databázi Scopus

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