Vorontsovite, (Hg5Cu)(Sigma 6)TlAs4S12, and Ferrovorontsovite, (Fe5Cu)(Sigma 6)TlAs4S12: The Tl- and Tl-Fe-Analogues of Galkhaite from the Vorontsovskoe Gold Deposit, Northern Urals, Russia

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00106692" target="_blank" >RIV/00216224:14310/18:00106692 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3390/min8050185" target="_blank" >http://dx.doi.org/10.3390/min8050185</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/min8050185" target="_blank" >10.3390/min8050185</a>

Result language

angličtina

Original language name

Vorontsovite, (Hg5Cu)(Sigma 6)TlAs4S12, and Ferrovorontsovite, (Fe5Cu)(Sigma 6)TlAs4S12: The Tl- and Tl-Fe-Analogues of Galkhaite from the Vorontsovskoe Gold Deposit, Northern Urals, Russia

Original language description

Two new mineral species, vorontsovite, ideally (Hg5Cu)TlAs4S12, and ferrovorontsovite, ideally (Fe5Cu)TlAs4S12, the Tl- and Tl-Fe-analogues of galkhaite, respectively, have been discovered at the Vorontsovskoe gold deposit, Northern Urals, Russia. They occur as anhedral grains up to 0.5 mm (vorontsovite) and 0.2 mm (ferrovorontsovite) embedded in a calcite-dolomite matrix. The chemical composition of vorontsovite (wt %) is: Hg 35.70, Fe 5.36, Zn 1.26, Cu 3.42, Ag 0.64, Tl 11.53, Cs 0.35, Pb 0.04, As 15.98, Sb 2.35, Te 0.41, S 22.70, Se 0.02, total 99.76. The empirical formula, calculated on the basis of 23 atoms pfu, is: [(Hg3.02Fe1.63Zn0.33)(Sigma 4.98)(Cu0.91Ag0.10)(Sigma 1.01)](Tl0.96Cs0.04)(Sigma 1.00)(As3.62Sb0.33Te0.05)(Sigma 4.00)S-12.01. The composition of ferrovorontsovite (wt %) is: Hg 25.13, Fe 9.89, Zn 1.16, Cu 3.95, Ag 0.45, Tl 12.93, Cs 0.44, Pb 0.04, As 17.83, Sb 2.15, Te 0.40, S 24.91, total 99.28. The empirical formula, calculated on the basis of 23 atoms pfu, is: [(Fe2.74Hg1.94Zn0.27)(Sigma 4.95)(Cu0.96Ag0.06)(Sigma 1.02)](Tl0.98Cs0.05)(Sigma 1.03)(As3.68Sb0.27Te0.05)(Sigma 4.00)S-12.00. Both minerals are cubic, space group I-43m, with a = 10.2956(6) angstrom, V = 1091.3(1) angstrom(3), Z = 2 (vorontsovite); and a = 10.2390(7) angstrom, V = 1073.43(22) angstrom(3), Z = 2 (ferrovorontsovite). The crystal structures of both minerals were refined to R = 0.0376 (vorontsovite) and R = 0.0576 (ferrovorontsovite). Vorontsovite and ferrovorontsovite have been approved by the IMA-CNMNC under the numbers 2016-076 and 2017-007, respectively. The first one is named after the type locality, but also honors the mining engineer Vladimir Vasilyevich Vorontsov. The second is named for its chemical composition, as the Fe-analogue of the first. Both species are isostructural with galkhaite, being its Tl- and Tl-Fe analogues, respectively, and forming altogether the galkhaite group.

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

—

Continuities

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Minerals

ISSN

2075-163X

e-ISSN

—

Volume of the periodical

8

Issue of the periodical within the volume

5

Country of publishing house

CH - SWITZERLAND

Number of pages

13

Pages from-to

185

UT code for WoS article

000435195900012

EID of the result in the Scopus database

2-s2.0-85047919395