Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Résumé Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Makovicky, E. Articles by Mumme, W. G. Search for Related Content GeoRef GeoRef Citation

THE CRYSTAL STRUCTURE OF DADSONITE

Emil Makovicky^1,, Dan Topa² and William G. Mumme³

¹ Geological Institute, University of Copenhagen, Østervoldgade 10, DK–1350 Copenhagen K, Denmark
² Department of Material Science, University of Salzburg, Hellbrunnerstr. 34, A–5020 Salzburg, Austria
³ CSIRO Minerals, Bayview Avenue, Clayton 3168, Australia

E-mail address: emilm{at}geol.ku.dk

The crystal structure of dadsonite, ideally Pb₂₃Sb₂₅S₆₀Cl, a 8.276(2), b 17.392(4), c 19.505(4) Å, 83.527(7), ß 77.882(8), 89.125(8)°, V 2727.2(9), space group P and Z = 1, from the Klaianka hydrothermal deposit, in the Low Tatra Mountains of Slovakia, has been refined to an R₁ index of 4.90% for 5263 unique reflections [F_o ² 2(F²)] measured with MoK radiation on a three-circle diffractometer equipped with a CCD detector. There are 10 pure Pb and 8 Sb sites, as well as three mixed (Pb,Sb) and (Sb,Pb) sites and three split coordinations of Sb in the crystal structure. Thirty S positions and one presumed Cl position, designated as "S1", constitute the anion part of the structure. The structure is of a rod-layer type, with two types of rod-layers alternating along the stacking direction b. Dadsonite is a desymmetrized OD structure with profuse twinning. The two types of layers present possess layer symmetries p and b2/m11, respectively. These layers respectively have a pseudoperiodicity equal to a/2 and a set of elements of pseudosymmetry which together cause a disorder process.

Keywords: dadsonite, Pb–Sb sulfosalt, crystal structure, chlorosulfide.

This article has been cited by other articles:

				E. Makovicky and D. Topa THE CRYSTAL STRUCTURE OF SULFOSALTS WITH THE BOXWORK ARCHITECTURE AND THEIR NEW REPRESENTATIVE, Pb15-2xSb14+2xS36Ox Can Mineral, February 1, 2009; 47(1): 3 - 24. [Abstract] [Full Text] [PDF]

				Y. Moelo, E. Makovicky, N. N. Mozgova, J. L. Jambor, N. Cook, A. Pring, W. Paar, E. H. Nickel, S. Graeser, S. Karup-Moller, et al. Sulfosalt systematics: a review. Report of the sulfosalt sub-committee of the IMA Commission on Ore Mineralogy European Journal of Mineralogy, February 1, 2008; 20(1): 7 - 46. [Abstract] [Full Text] [PDF]