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@article{2243161,
author = {Biagioni, Cristian and Kasatkin, Anatoly and Sejkora, Jiří and Nestola, Fabrizio and Škoda, Radek},
article_location = {Middlesex},
article_number = {5},
doi = {http://dx.doi.org/10.1180/mgm.2022.61},
keywords = {tennantite-(Cd); new mineral; sulfosalt; copper; cadmium; arsenic; crystal structure; Berenguela mining district; Bolivia},
language = {eng},
issn = {0026-461X},
journal = {Mineralogical Magazine},
title = {Tennantite-(Cd), Cu-6(Cu4Cd2)As4S13, from the Berenguela mining district, Bolivia: the first Cd-member of the tetrahedrite group},
url = {https://www.cambridge.org/core/journals/mineralogical-magazine/article/tennantitecd-cu6cu4cd2as4s13-from-the-berenguela-mining-district-bolivia-the-first-cdmember-of-the-tetrahedrite-group/4803401B951D55D86A49648730DA9CB4},
volume = {86},
year = {2022}
}
TY - JOUR
ID - 2243161
AU - Biagioni, Cristian - Kasatkin, Anatoly - Sejkora, Jiří - Nestola, Fabrizio - Škoda, Radek
PY - 2022
TI - Tennantite-(Cd), Cu-6(Cu4Cd2)As4S13, from the Berenguela mining district, Bolivia: the first Cd-member of the tetrahedrite group
JF - Mineralogical Magazine
VL - 86
IS - 5
SP - 834-840
EP - 834-840
PB - Mineralogical Society
SN - 0026461X
KW - tennantite-(Cd)
KW - new mineral
KW - sulfosalt
KW - copper
KW - cadmium
KW - arsenic
KW - crystal structure
KW - Berenguela mining district
KW - Bolivia
UR - https://www.cambridge.org/core/journals/mineralogical-magazine/article/tennantitecd-cu6cu4cd2as4s13-from-the-berenguela-mining-district-bolivia-the-first-cdmember-of-the-tetrahedrite-group/4803401B951D55D86A49648730DA9CB4
N2 - Tennantite-(Cd), Cu10Cd2As4S13, was approved as a new mineral species from the Berenguela mining district, Pacajes Province, La Paz, Bolivia. It occurs as black metallic anhedral grains, up to 1 mm across, associated with baryte, montmorillonite and secondary Cd-sulfates (aldridgeite, niedermayrite and voudourisite). In reflected light, tennantite-(Cd) is isotropic and grey with brownish tints. Reflectance data for the four COM wavelengths in air are [λ (nm): R (%)]: 470: 30.0; 546: 30.1; 589: 28.2; and 650: 25.8. Electron microprobe analysis gave (in wt.% – average of 11 spot analyses): Cu 40.56(32), Ag 0.05(5), Fe 0.04(1), Zn 1.91(63), Cd 11.32(1.09), Hg 0.04(7), As 19.04(43), S 26.78(30), total 99.74(53). On the basis of ΣMe = 16 atoms per formula unit (apfu), the empirical formula of tennantite-(Cd) is Cu9.98Ag0.01Cd1.57Zn0.46Fe0.01As3.97S13.05. Tennantite-(Cd) is cubic, I3m, with unit-cell parameters a = 10.3088(2) Å, V = 1095.53(6) Å3 and Z = 2. Its crystal structure was refined by single-crystal X-ray diffraction data to a final R1 = 0.0152 on the basis of 359 unique reflections with Fo > 4σ(Fo) and 22 refined parameters. Tennantite-(Cd) is isotypic with other tetrahedrite-group minerals. Its crystal-chemistry is discussed and previous findings of Cd-rich tetrahedrite-group minerals are briefly reviewed.
ER -
BIAGIONI, Cristian, Anatoly KASATKIN, Jiří SEJKORA, Fabrizio NESTOLA a Radek ŠKODA. Tennantite-(Cd), Cu-6(Cu4Cd2)As4S13, from the Berenguela mining district, Bolivia: the first Cd-member of the tetrahedrite group. \textit{Mineralogical Magazine}. Middlesex: Mineralogical Society, 2022, roč.~86, č.~5, s.~834-840. ISSN~0026-461X. Dostupné z: https://dx.doi.org/10.1180/mgm.2022.61.
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