Stibiogoldfieldite, Cu12(Sb2Te2)S13, a new tetrahedrite-group mineral
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F22%3A10135667" target="_blank" >RIV/00023272:_____/22:10135667 - isvavai.cz</a>
Result on the web
<a href="https://www.cambridge.org/core/journals/mineralogical-magazine/article/stibiogoldfieldite-cu12sb2te2s13-a-new-tetrahedritegroup-mineral/8F4A40ED811B95B9CAD88ADB6B7D24D4" target="_blank" >https://www.cambridge.org/core/journals/mineralogical-magazine/article/stibiogoldfieldite-cu12sb2te2s13-a-new-tetrahedritegroup-mineral/8F4A40ED811B95B9CAD88ADB6B7D24D4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1180/mgm.2021.107" target="_blank" >10.1180/mgm.2021.107</a>
Alternative languages
Result language
angličtina
Original language name
Stibiogoldfieldite, Cu12(Sb2Te2)S13, a new tetrahedrite-group mineral
Original language description
Stibiogoldfieldite, Cu12(Sb2Te2)S13, was approved as a new mineral species from the Mohawk mine, Goldfield mining district, Esmeralda County, Nevada, USA. It occurs as metallic anhedral grains, dark grey in colour. It is associated with quartz, pyrite and an Ag-Bi-(S,Se) phase (holotype material) and with quartz, pyrite, calaverite, bismuthinite, bohdanowiczite, and the Ag-Bi-(S,Se) phase (cotype material). In reflected light, stibiogoldfieldite is isotropic, grey in colour, with indistinct brownish shade. Reflectance data in air [R (%)] are: 31.1 at 470 nm, 30.9 at 546 nm, 30.8 at 589 nm and 31.0 at 650 nm. Electron microprobe analysis for holotype material gave (in wt.% - average of 60 spot analyses): Cu 45.03(60), Ag 0.26(7), Fe 0.02(3), Zn 0.13(15), Sn 0.02(4), Pb 0.05(6), Sb 8.02(62), As 2.80(65), Bi 2.77(87), Te 15.15(1.24), S 24.50(32), Se 0.52(11), total 99.27(69). On the basis of (As + Sb + Te + Bi) = 4 apfu, the empirical formula of stibiogoldfieldite is (Cu12.05Ag0.04Zn0.03Fe0.01)12.13(Sb1.12As0.63Bi0.23Te2.02)4.00(S12.99Se0.11)13.10. Chemical data on an additional sample from the same locality (cotype material) gave the following results (in wt.% - average of 181 spot analyses): Cu 43.84(63), Ag 0.21(7), Sb 5.92(78), As 2.63(45), Te 20.07(1.19), S 25.13(53), Se 0.97(35), total 99.47(66). On the basis of (As + Sb + Te + Bi) = 4 apfu, the empirical formula of cotype material is (Cu11.30Ag0.03) 11.33(Sb0.80As0.57Bi0.06Te2.57)4.00(S12.83Se0.20)13.03. Stibiogoldfieldite is cubic, I 4-3m, with unit-cell parameters a = 10.3466(17) A, V = 1107.6(5) A3 and Z = 2 (holotype). Unit-cell parameters for the cotype sample are a = 10.3035(2) A and V = 1093.83(7) A3. The crystal structure of holotype stibiogoldfieldite was refined by single-crystal X-ray diffraction data to a final R1 = 0.032 on the basis of 285 reflections with Fo > 4 sigma(Fo) and 20 refined parameters. Stibiogoldfieldite is isotypic with other members of the tetrahedrite group.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10504 - Mineralogy
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Mineralogical Magazine
ISSN
0026-461X
e-ISSN
—
Volume of the periodical
86
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
168-175
UT code for WoS article
000759699900001
EID of the result in the Scopus database
—