Luxembourgite, AgCuPbBi4Se8, a new mineral species from Bivels, Grand Duchy of Luxembourg

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Luxembourgite, AgCuPbBi4Se8, a new mineral species from Bivels, Grand Duchy of Luxembourg

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Luxembourgite, AgCuPbBi4Se8, a new mineral species from Bivels, Grand Duchy of Luxembourg

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10504 - Mineralogy

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

European Journal of Mineralogy

ISSN

0935-1221

e-ISSN

—

Svazek periodika

32

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

449-455

Kód UT WoS článku

000562140100001

EID výsledku v databázi Scopus

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