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Arsenoústalečite

Collectors Summary

Hardness (Mohs) 3½–4
Crystal System kubisch, P43m

Chemism

Chemical formula

Cu6Cu6(As2Te2)Se13

Empirical formula (analysis)

(Cu5.81Ag0.17)Σ5.98(Cu5.95Fe0.02Zn0.02Hg0.01)Σ6.00(As1.40Sb0.87Te1.73)Σ4.00(Se10.30S2.32)Σ12.61

IMA status

anerkannt - CNMNC Newsletter 72, Feb. - Mar. 2023

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Tetrahedrite Group  ⇒ Ústalečite series

Crystallography

Crystal System

kubisch

Class (H-M)

43m

Space Group number

215

Space Group

P43m

Cell parameters a (Å)

10.658(2)

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

1210.674

Crystal structure

Tetraedrit-Gruppe; Struktur ermittelt

X-Ray Powder Diffraction

3.768(6), 3.077(100), 2.848(10), 2.512(7), 1.946(12), 1.884(52), 1.729(7), 1.608(21)
XRD chart Arsenoústalečite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hardness (Mohs)

3½–4

Density (g/cm³)

5.730 berechnet

5.731 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Tschechien/Pilsen (Plzeňský kraj)/Klattau (Okres Klatovy)/Ellischau (Nalžovské Hory)/Austaletz (Ústaleč)/Austaletz (Ústaleč) U-Vorkommen

Type material

Das Typmaterial ist in den Sammlungen der Abteilung für Mineralogie und Petrologie des Nationalmuseums, Cirkusová 1740, 19300 Prag 9, Tschechische Republik, hinterlegt, Katalognummer P1P 7

Paragenesis of type material

Calcit-Gang, neben Stibioústalečit, Hakit-(Hg), Berzelianit und Uraninit

Preface

Author (Name, Year)

Jiří Sejkora, Cristian Biagioni, Pavel Škácha, Silvia Musetti, und Daniela Mauro (2024)

References

Sejkora, J., Biagioni, C., Škácha, P., Musetti, S., and Mauro, D.: Arsenoústalečite, IMA 2022-116, in: CNMNC Newsletter 72, Eur. J. Mineral., 35, https://doi.org/10.5194/ejm-35-285-2023, 2023.

Jiří Sejkora, Cristian Biagioni, Pavel Škácha, Silvia Musetti, Daniela Mauro: Arsenoústalečite, Cu12(As2Te2)Se13, a new mineral, and crystal structures of arsenoústalečite and stibioústalečite. Mineralogical Magazine Vol. 88, Nr. 2 (2024) S. 127–135. Open Access https://doi.org/10.1180/mgm.2023.94

IMA group assignments

 
Tetrahedrite Group
 
 
 

 
 
Ústalečite series
 
 
 

 
 
 
Arsenoústalečite
Cu6Cu6(As2Te2)Se13
kubisch
P43m

 
 
 
Stibioústalečite
Cu6Cu6(Sb2Te2)Se13
kubisch
I43m

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Actuality: 17. May 2025 - 17:47:13

Other languages

German

Arsenoústalečit

English

Arsenoústalečite

CNMNC (IMA)-Number

IMA 2022-116

CNMNC symbol

Symbol

Aúč

Locations with GPS information

IDs

GUSID (Global unique identifier short form) MSN-67LQ0k6Un10qJeoBpw
GUID (Global unique identifier) EB7E2331-D0B2-4ED2-949F-5D2A25EA01A7
Database ID 9313