Nollmotzite, Mg[U-V((UO2)-O-VI)(2)O4F3]center dot 4H(2)O, the first natural uranium oxide containing fluorine

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00106690" target="_blank" >RIV/00216224:14310/18:00106690 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1107/S2052520618007321" target="_blank" >http://dx.doi.org/10.1107/S2052520618007321</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1107/S2052520618007321" target="_blank" >10.1107/S2052520618007321</a>

Result language
angličtina
Original language name
Nollmotzite, Mg[U-V((UO2)-O-VI)(2)O4F3]center dot 4H(2)O, the first natural uranium oxide containing fluorine
Original language description
Nollmotzite (IMA2017-100), Mg[U-V((UO2)-O-VI)(2)F3O4](H2O)(4), is a new uranium oxide fluoride mineral found in the Clara mine, Black Forest Mountains, Germany. Electron microprobe analysis provided the empirical formula (Mg1.06CU0.02)(Sigma 1.08)[U-V((UO2)-O-VI)(2)O-3.85 F-3.15][(H2O)(3.69)(OH)(0.31)](Sigma 4.00) based on three U and 15 O + F atoms per formula unit. Nollmotzite is monoclinic, space group Cm, with a = 7.1015 (12) angstrom, b = 11.7489 (17) angstrom, c = 8.1954 (14) angstrom, beta = 98.087 (14)degrees, V = 676.98 (19) angstrom(3) and Z = 2. The crystal structure [twinned by reticular merohedry; refined to R = 0.0369 with GoF = 1.09 for 1527 unique observed reflections, I > 3 sigma (I)] is based upon [U-V((UO2)-O-V-O-I)(2)F3O4](2- )sheets of, beta - U3O8 topology and contains an interlayer with MgF2(H2O)(4) octahedra. Adjacent sheets are linked through F-Mg-F bonds, as well as via hydrogen bonds. The presence of fluorine and pentavalent uranium in the structure of nollmotzite has potentially important implications for the safe disposal of nuclear waste.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10504 - Mineralogy

Project
—
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS
ISSN
2052-5206
e-ISSN
—
Volume of the periodical
74
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
362-369
UT code for WoS article
000442740800005
EID of the result in the Scopus database
2-s2.0-85052212903

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