Auroselenide, AuSe, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F23%3A10168915" target="_blank" >RIV/00025798:_____/23:10168915 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1180/mgm.2022.137" target="_blank" >https://doi.org/10.1180/mgm.2022.137</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1180/mgm.2022.137" target="_blank" >10.1180/mgm.2022.137</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Auroselenide, AuSe, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia

Popis výsledku v původním jazyce

Auroselenide, ideally AuSe, is a new mineral from the Gaching ore occurrence of the Maletoyvayam deposit, Kamchatka peninsula, Russia. It occurs as anhedral grains up to 0.05 x 0.02 mm and as intergrowths up to 0.06 mm with maletoyvayamite-tolstykhite-series minerals, enclosed in native gold. Other associated minerals include pyrite, calaverite, fischesserite, gachingite, tetrahedrite-group minerals [stibiogoldfieldite, its As-analogue, tennantite-(Cu) and tetrahedrite-(Zn)], tripuhyite, minerals of the famatinite-luzonite and selenium-tellurium series, paraguanajuatite, petrovskaite, soucekite and tiemannite. Auroselenide is bluish-grey, opaque with metallic lustre and grey streak. It is brittle and has an uneven fracture. Dcalc = 9.750 g/cm(3). In reflected light, auroselenide is grey with a bluish shade. Bireflectance is very weak. No pleochroism and internal reflections are observed. In crossed polars, it is strongly anisotropic with bluish to brownish rotation tints. The reflectance values for wavelengths recommended by the Commission on Ore Mineralogy of the International Mineralogical Association are (Rmin/Rmax, %): 28.4/31.5 (470 nm), 30.2/33.3 (546 nm), 31.9/34.9 (589 nm) and 34.3/37.3 (650 nm). The principal bands in the Raman spectrum of auroselenide are at 93, 171, 200, 210 and 325 cm(-1). The empirical formula calculated on the basis of 2 atoms per formula unit is (Au0.98Ag0.01)S-0.99(Se0.79S0.17Te0.05)S1.01. Auroselenide is monoclinic, space group C-2/m, a = 8.319(1), b = 3.616(1), c = 6.276(2) A, ss = 104.54(2)degrees, V = 182.74(5) A3 and Z = 4. The strongest lines of the powder X-ray diffraction pattern [d, A (I, %) (hkl)] are: 4.015 (54) (200); 3.033 (25) (111, 002); 2.780 (100) (202, 111); 2.172 (20) (311, 310); and 1.811 (25) (113). Auroselenide is the natural analogue of synthetic ss-AuSe. The structural identity between them is confirmed by powder X-ray diffraction and Raman spectroscopy. The mineral is named according to its composition, as a combination of the main elements Au (aurum) and Se (selenium).

Název v anglickém jazyce

Auroselenide, AuSe, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia

Popis výsledku anglicky

Auroselenide, ideally AuSe, is a new mineral from the Gaching ore occurrence of the Maletoyvayam deposit, Kamchatka peninsula, Russia. It occurs as anhedral grains up to 0.05 x 0.02 mm and as intergrowths up to 0.06 mm with maletoyvayamite-tolstykhite-series minerals, enclosed in native gold. Other associated minerals include pyrite, calaverite, fischesserite, gachingite, tetrahedrite-group minerals [stibiogoldfieldite, its As-analogue, tennantite-(Cu) and tetrahedrite-(Zn)], tripuhyite, minerals of the famatinite-luzonite and selenium-tellurium series, paraguanajuatite, petrovskaite, soucekite and tiemannite. Auroselenide is bluish-grey, opaque with metallic lustre and grey streak. It is brittle and has an uneven fracture. Dcalc = 9.750 g/cm(3). In reflected light, auroselenide is grey with a bluish shade. Bireflectance is very weak. No pleochroism and internal reflections are observed. In crossed polars, it is strongly anisotropic with bluish to brownish rotation tints. The reflectance values for wavelengths recommended by the Commission on Ore Mineralogy of the International Mineralogical Association are (Rmin/Rmax, %): 28.4/31.5 (470 nm), 30.2/33.3 (546 nm), 31.9/34.9 (589 nm) and 34.3/37.3 (650 nm). The principal bands in the Raman spectrum of auroselenide are at 93, 171, 200, 210 and 325 cm(-1). The empirical formula calculated on the basis of 2 atoms per formula unit is (Au0.98Ag0.01)S-0.99(Se0.79S0.17Te0.05)S1.01. Auroselenide is monoclinic, space group C-2/m, a = 8.319(1), b = 3.616(1), c = 6.276(2) A, ss = 104.54(2)degrees, V = 182.74(5) A3 and Z = 4. The strongest lines of the powder X-ray diffraction pattern [d, A (I, %) (hkl)] are: 4.015 (54) (200); 3.033 (25) (111, 002); 2.780 (100) (202, 111); 2.172 (20) (311, 310); and 1.811 (25) (113). Auroselenide is the natural analogue of synthetic ss-AuSe. The structural identity between them is confirmed by powder X-ray diffraction and Raman spectroscopy. The mineral is named according to its composition, as a combination of the main elements Au (aurum) and Se (selenium).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10504 - Mineralogy

Projekt

<a href="/cs/project/GA22-26485S" target="_blank" >GA22-26485S: Syntetické minerály skupiny Pt-kovů a jejich využití</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Mineralogical Magazine

ISSN

0026-461X

e-ISSN

1471-8022

Svazek periodika

87

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

284-291

Kód UT WoS článku

000956159400001

EID výsledku v databázi Scopus

2-s2.0-85144980690