Prossima pubblicazione.
Referenza:
▪ Matsushita, Y. (2018): Reexamination of the crystal structure of semseyite, Pb9Sb8S21. Zeitschrift für Kristallographie - Crystalline Materials, 233, (in press).
Abstract:
The crystal structure of semseyite, Pb9Sb8S21 was successfully refined using a single-crystal specimen from Wolfsberg, Harz, Germany, having chemical composition (EPMA) Pb9.01(1)Sb8.00(3)S21.05(5). The structure belongs to the monoclinic C2/c space group (a=13.6267(10) Å, b=11.9742(9) Å, c=24.5891(18) Å, β=105.997(3)°, V=3856.8(5) Å3, Z=4, Dc=6.048 g/cm3). Crystal structure refinement with all atoms refined anisotropically converged to R1=4.64% (I>2σ(I)). The crystal structure is built of two subunits (A and B) showing TlSbS2-like topology. Each of them stacks parallel to (001), and c/2 in thickness. Two cation sites (Pb1 and Sb5) located at central part of the subunit, show mixed occupancy behavior as 95% Pb and 5% Sb at the Pb5 site, and 95% Sb and 5% Pb at the Sb1 site, respectively. Each of subunits are related by unit cell-level twinning mechanism “tropochemical cell twinning” with the TlSbS2-like subunits alternatively parallel to (1 1 −4) and (−1 1 4) planes.
Reexamination of the crystal structure of semseyite
- Marco E. Ciriotti
- Messaggi: 31675
- Iscritto il: ven 25 giu, 2004 11:31
- Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
- Contatta:
Reexamination of the crystal structure of semseyite
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
- Marco E. Ciriotti
- Messaggi: 31675
- Iscritto il: ven 25 giu, 2004 11:31
- Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
- Contatta:
Re: Reexamination of the crystal structure of semseyite
Pubblicazione effettuata.
Referenza:
▪ Matsushita, Y. (2018): Reexamination of the crystal structure of semseyite, Pb9Sb8S21. Zeitschrift für Kristallographie - Crystalline Materials, 233, 279-284.
Referenza:
▪ Matsushita, Y. (2018): Reexamination of the crystal structure of semseyite, Pb9Sb8S21. Zeitschrift für Kristallographie - Crystalline Materials, 233, 279-284.
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
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