Titre du document / Document title

Crystal structure refinement of sahlinite, Pb¹⁴(AsO⁴)²O⁹Cl⁴

Auteur(s) / Author(s)

BONACCORSI E. ; PASERO M. ;

Résumé / Abstract

The crystal structure of sahlinite [Pb¹⁴(AsO⁴)²O⁹Cl⁴] from Langban (Sweden) has been refined up to R = 0.071 using single-crystal diffraction data collected at the Elettra synchrotron facility. Sahlinite is monoclinic, space group C2/c, with a = 12.704(4), b = 22.576(5), c = 11.287(4) Å, β = 118.37(3)°. Sahlinite is isostructural with kombatite, its vanadium counterpart. Both are derivatives of the litharge form of PbO. In the structure of sahlinite there are seven independent Pb atoms, which are linked to Cl and/or O atoms, with coordination number ranging from V to VIII. The coordination polyhedra are irregularly shaped, due to the 6s₂ lone-pair effect displayed by Pb₂₊.

Revue / Journal Title

Mineralogical Magazine   ISSN 0026-461X   CODEN MNLMBB 

Source / Source

2003, vol. 67, n^o1, pp. 15-21 [7 page(s) (article)]

Langue / Language

Anglais

Editeur / Publisher

Mineralogical Society, London, ROYAUME-UNI  (1969) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 3052, 35400010775006.0020