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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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).

Czech name

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Czech description

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Type

J_imp - 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

<a href="/en/project/GA18-15390S" target="_blank" >GA18-15390S: Experimental and mineralogical study of selected platinum-group chalcogenides and alloys</a><br>

Continuities

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

Publication year

2020

Confidentiality

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

Name of the periodical

Mineralogy and Petrology

ISSN

0930-0708

e-ISSN

—

Volume of the periodical

114

Issue of the periodical within the volume

5

Country of publishing house

AT - AUSTRIA

Number of pages

11

Pages from-to

443-451

UT code for WoS article

000537665400001

EID of the result in the Scopus database

2-s2.0-85086005870