Tetrahedrite-(Cu), Cu12Sb4S13, from Bankov near Košice, Slovak Republic: a new member of the tetrahedrite group

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F24%3A10136685" target="_blank" >RIV/00023272:_____/24:10136685 - isvavai.cz</a>

Result on the web

<a href="https://www.cambridge.org/core/journals/mineralogical-magazine/article/tetrahedritecu-cu12sb4s13-from-bankov-near-kosice-slovak-republic-a-new-member-of-the-tetrahedrite-group/CB23E5A2B9AA65A574639D12A1419126" target="_blank" >https://www.cambridge.org/core/journals/mineralogical-magazine/article/tetrahedritecu-cu12sb4s13-from-bankov-near-kosice-slovak-republic-a-new-member-of-the-tetrahedrite-group/CB23E5A2B9AA65A574639D12A1419126</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1180/mgm.2024.24" target="_blank" >10.1180/mgm.2024.24</a>

Result language

angličtina

Original language name

Tetrahedrite-(Cu), Cu12Sb4S13, from Bankov near Košice, Slovak Republic: a new member of the tetrahedrite group

Original language description

Tetrahedrite-(Cu), Cu12Sb4S13, has been approved as a new mineral species (IMA2022-078) from the Bankov magnesite deposit near Košice, Slovak Republic where it occurs as anhedral grains, up to 0.4 mm across, associated with skinnerite, chalcostibite, famatinite, tetrahedrite-(Fe) and zoned aggregates of tennantite-(Cu) to tennantite-(Fe). Tetrahedrite-(Cu) is steel-grey, with a metallic lustre. Mohs hardness is ca. 31/2-4 and calculated density is 5.029 g.cm-3. In reflected light, tetrahedrite-(Cu) is isotropic and grey with a bluish shade. Reflectance data for the four COM wavelengths in air are [λ (nm): R (%)]: 470: 31.1; 546: 30.1; 589: 29.9; and 650: 28.1. The empirical formula, based on electron-microprobe data (mean of 17 spot analyses), is Cu11.42Zn0.26Fe0.19(Sb4.06As0.08)Σ4.14S12.99. The ideal formula is Cu6(Cu4Cu2)Sb4S13, which requires (in wt.%) Cu 45.76, Sb 29.23 and S 25.01, total 100.00. Tetrahedrite-(Cu) is cubic, I3m, with unit-cell parameters a = 10.3296(15) Å, V = 1102.2(5) Å3 and Z = 2. Its crystal structure was refined by single-crystal X-ray diffraction data to a final R1 = 0.0347 on the basis of 261 unique reflections with Fo &gt; 4σ(Fo) and 22 refined parameters. Tetrahedrite-(Cu) is isotypic with other tetrahedrite-group minerals. Previous findings of tetrahedrite-(Cu) are reported and some nomenclature issues, related to the Fe and Cu oxidation states, are discussed. At the Bankov deposit, tetrahedrite-(Cu) is related to hydrothermal, most probably Alpine, solutions strongly enriched in Cu, Sb and S.

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

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Mineralogical Magazine

ISSN

0026-461X

e-ISSN

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Volume of the periodical

88

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

392-399

UT code for WoS article

001309191700001

EID of the result in the Scopus database

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