Luxembourgite, AgCuPbBi4Se8, a new mineral species from Bivels, Grand Duchy of Luxembourg
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F20%3A10134934" target="_blank" >RIV/00023272:_____/20:10134934 - isvavai.cz</a>
Result on the web
<a href="https://ejm.copernicus.org/articles/32/449/2020/" target="_blank" >https://ejm.copernicus.org/articles/32/449/2020/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5194/ejm-32-449-2020" target="_blank" >10.5194/ejm-32-449-2020</a>
Alternative languages
Result language
angličtina
Original language name
Luxembourgite, AgCuPbBi4Se8, a new mineral species from Bivels, Grand Duchy of Luxembourg
Original language description
Luxembourgite, ideally AgCuPbBi4Se8, is a new selenide discovered at Bivels, Grand Duchy of Luxembourg. The mineral forms tiny fibres reaching 200 mu m in length and 5 mu m in diameter, which are deposited on dolomite crystals. Luxembourgite is grey, with a metallic lustre and without cleavage planes; its Mohs hardness is 3 and its calculated density is 8.00 g cm(-3). Electron-microprobe analyses indicate an empirical formula Ag-1.00 (Cu0.82Ag0.20Fe0.01)(S1.03)Pb1.13Bi4.11(Se7.72S0.01)(S7)(.73) calculated on the basis of 15 atoms per formula unit. A single-crystal structure refinement was performed to R-1 = 0.0476, in the P2(1)/m space group, with a = 13.002(1), b = 4.1543(3), c = 15.312(2) angstrom, beta = 108.92(1)degrees, V = 782.4(2) angstrom(3), Z = 2. The crystal structure is similar to that of litochlebite and watkinsonite and can be described as an alternation of two types of anionic layers: a pseudotetragonal layer four atoms thick and a pseudohexagonal layer that is one atom thick. In the pseudotetragonal layers the Bi1, Bi2 ,Bi3, Pb, and Ag 1 atoms are localised, while the Cu2 and Bi4 atoms occur between the pseudotetragonal and the pseudohexagonal layers. Bil, Bi2, and Bi3 atoms occur in weakly distorted octahedral sites, whereas Bi4 occurs in a distorted 7-coordinated site. Ag 1 occupies a fairly regular octahedral site, Cu2 a tetrahedral position, and Pb occurs on a very distorted 8-coordinated site.
Czech name
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Czech description
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Classification
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
Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Journal of Mineralogy
ISSN
0935-1221
e-ISSN
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Volume of the periodical
32
Issue of the periodical within the volume
August
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
449-455
UT code for WoS article
000562140100001
EID of the result in the Scopus database
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