2025
Neyite from the Yugo-Konevo Deposit (Southern Urals, Russia) and Its Crystal Structure
KORNYAKOV, I. V.; A. V. KASATKIN; V. V. GURZHIY; Radek ŠKODA; A. M. KUZNETSOV et al.Základní údaje
Originální název
Neyite from the Yugo-Konevo Deposit (Southern Urals, Russia) and Its Crystal Structure
Autoři
KORNYAKOV, I. V.; A. V. KASATKIN; V. V. GURZHIY; Radek ŠKODA a A. M. KUZNETSOV
Vydání
GEOLOGY OF ORE DEPOSITS, TORTOLA, PLEIADES PUBLISHING LTD, 2025, 1075-7015
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10504 Mineralogy
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 0.600 v roce 2024
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/25:00143731
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
neyite; optical data; chemical composition; crystal structure; Yugo-Konevo tungsten deposit; Southern Urals; first find in Russia
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 23. 2. 2026 11:13, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
Neyite Ag2Cu6Pb25Bi26S68 was identified in the wastes of the Yugo-Konevo tungsten deposit (Chelyabinsk oblast, Southern Urals) for a first time in Russia. This rare sulfosalt occurs as prismatic crystals up to 3 × 0.5 mm in fluorite–muscovite–quartz veins and is associated with aikinite, tetradymite, and pyrite. Reflectance spectra and coefficients of neyite are published for the first time. The electron microprobe composition of neyite (wt %, mean of seven analyses): Ag 1.75, Cu 3.59, Pb 35.01, Cd 0.12, Bi 42.59, S16.54, total 99.60. The empirical formula based on S = 68 apfu is Ag2.14Cu7.45Pb22.27Cd0.14Bi26.86S68. The crystal structure of neyite from Yugo-Konevo was refined based on the monocrystal, R1 = 3.43%, wR2 = 7.22%. The mineral is monoclinic, space group С2/m, a = 37.3900(6), b = 4.05500(10), c = 43.5821(7) Å, β = 108.740(2)°, V = 6257.5(2) Å3, Z = 2. The structure of neyite is based upon three different modules of archetypal structure of galena. (111)PbS blocks make up octahedral “columns” extended along the b direction, which alternate with (100)PbS blocks in the a direction. The resulting layers are alternated with (922)PbS layers along c. The main structural feature of neyite from Yugo-Konevo deposit that distinguishes it from previously described neyite from the type locality and cuproneyite is the disorder of the Me16 position and the presence of the additional Cu5 position. These features, along with analysis of the bond valence sums, suggest the presence of chains of CuS4 tetrahedra alternating with chains of BiS6 octahedra.