Roterbärite, PdCuBiSe3, a new mineral species from the Roter Bär mine, Harz Mountains, Germany

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F20%3A00000127" target="_blank" >RIV/00025798:_____/20:00000127 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2Fs00710-020-00703-1" target="_blank" >https://link.springer.com/article/10.1007%2Fs00710-020-00703-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00710-020-00703-1" target="_blank" >10.1007/s00710-020-00703-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Roterbärite, PdCuBiSe3, a new mineral species from the Roter Bär mine, Harz Mountains, Germany

Popis výsledku v původním jazyce

Roterbärite, PdCuBiSe3, is a new mineral species from the Roter Bär mine, Harz Mountains, Germany. It forms euhedral tosubhedral grains, up to 50 micrometer across, embedded in clausthalite, which is spatially associated with gold, mertieite-II,bohdanowiczite, hematite, chalcopyrite, baryte, ankerite and dolomite. Roterbärite is brittle and has a metallic luster. In planepolarizedlight, roterbärite is slightly pleochroic in shades of dark cream to slightly greenish cream; it has weak anisotropy withrotation tints in shades of pale orange brown to grey and exhibits no internal reflections. Reflectance values of roterbärite in air(R2, R1 in percent) are: 42.4/43.0 at 470 nm, 45.4/44.4 at 546 nm, 46.8/44.6 at 589 nm and 47.7/44.6 at 650 nm. Eighteen electronmicroprobeanalyses of roterbärite gave an average composition (in wtpercent): Pd 18.1 wtpercent, Bi 35.2 wtpercent, Cu 10.5wtpercent, Se 33.5wtpercentand S 2.6 wtpercent, totalling 99.8 wtpercent and corresponding to the empirical formula Pd1.01Cu0.98Bi1.00(Se2.53S0.48)3.01, based on 6atoms; the average of ten microanalyses on its synthetic analogue is: Pd 17.62 wtpercent, Cu 10.74 wtpercent, Bi 33.59 wtpercent and Se38.70 wtpercent, the total of which is 100.65 wtpercent and corresponds to Pd1.01Cu1.03Bi0.98Se2.98. The ideal formula is PdCuBiSe3. Thedensity, calculated on the basis of the empirical formula, is 7.23 g/cm3. The mineral is orthorhombic, space group P212121, with a5.00520(10), b 7.9921(2) angstroem, c 13.5969(2) angstroem, V 543.90(2) angstroem3 and Z = 4. The crystal structure was solved and refined from thepowder X-ray diffraction data of synthetic PdCuBiSe3. Roterbärite crystallizes in the (Bi,Sb)CuNiS3 structure-type, beingisostructural with minerals of the lapieite group – i.e., lapieite (CuNiSbS3), mückeite (CuNiBiS3) and lisiguangite (CuPtBiS3).Roterbärite belongs to the vast group of sulfosalts and related compounds (a selenio-salt). The strongest lines in the powder X-raydiffraction pattern of the synthetic PdCuBiSe3 [d in angstroem (I) (hkl)] are: 3.3593 (97) (103), 3.1226 (100) (120), 3.0434 (75) (121),2.3894 (39) (105), 1.9210 (70)(223).

Název v anglickém jazyce

Roterbärite, PdCuBiSe3, a new mineral species from the Roter Bär mine, Harz Mountains, Germany

Popis výsledku anglicky

Roterbärite, PdCuBiSe3, is a new mineral species from the Roter Bär mine, Harz Mountains, Germany. It forms euhedral tosubhedral grains, up to 50 micrometer across, embedded in clausthalite, which is spatially associated with gold, mertieite-II,bohdanowiczite, hematite, chalcopyrite, baryte, ankerite and dolomite. Roterbärite is brittle and has a metallic luster. In planepolarizedlight, roterbärite is slightly pleochroic in shades of dark cream to slightly greenish cream; it has weak anisotropy withrotation tints in shades of pale orange brown to grey and exhibits no internal reflections. Reflectance values of roterbärite in air(R2, R1 in percent) are: 42.4/43.0 at 470 nm, 45.4/44.4 at 546 nm, 46.8/44.6 at 589 nm and 47.7/44.6 at 650 nm. Eighteen electronmicroprobeanalyses of roterbärite gave an average composition (in wtpercent): Pd 18.1 wtpercent, Bi 35.2 wtpercent, Cu 10.5wtpercent, Se 33.5wtpercentand S 2.6 wtpercent, totalling 99.8 wtpercent and corresponding to the empirical formula Pd1.01Cu0.98Bi1.00(Se2.53S0.48)3.01, based on 6atoms; the average of ten microanalyses on its synthetic analogue is: Pd 17.62 wtpercent, Cu 10.74 wtpercent, Bi 33.59 wtpercent and Se38.70 wtpercent, the total of which is 100.65 wtpercent and corresponds to Pd1.01Cu1.03Bi0.98Se2.98. The ideal formula is PdCuBiSe3. Thedensity, calculated on the basis of the empirical formula, is 7.23 g/cm3. The mineral is orthorhombic, space group P212121, with a5.00520(10), b 7.9921(2) angstroem, c 13.5969(2) angstroem, V 543.90(2) angstroem3 and Z = 4. The crystal structure was solved and refined from thepowder X-ray diffraction data of synthetic PdCuBiSe3. Roterbärite crystallizes in the (Bi,Sb)CuNiS3 structure-type, beingisostructural with minerals of the lapieite group – i.e., lapieite (CuNiSbS3), mückeite (CuNiBiS3) and lisiguangite (CuPtBiS3).Roterbärite belongs to the vast group of sulfosalts and related compounds (a selenio-salt). The strongest lines in the powder X-raydiffraction pattern of the synthetic PdCuBiSe3 [d in angstroem (I) (hkl)] are: 3.3593 (97) (103), 3.1226 (100) (120), 3.0434 (75) (121),2.3894 (39) (105), 1.9210 (70)(223).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10504 - Mineralogy

Projekt

<a href="/cs/project/GA18-15390S" target="_blank" >GA18-15390S: Experimentální a mineralogický výzkum vybraných chalkogenidů a slitin Pt-kovů</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Mineralogy and Petrology

ISSN

0930-0708

e-ISSN

—

Svazek periodika

114

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

11

Strana od-do

443-451

Kód UT WoS článku

000537665400001

EID výsledku v databázi Scopus

2-s2.0-85086005870