Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/4447
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Hinsdalite and plumbogummite, their atomic arrangements and disordered lead sites |
Author: | Kolitsch, U. Tiekink, E. Slade, P. Taylor, M. Pring, A. |
Citation: | European Journal of Mineralogy, 1999; 11(3):513-520 |
Publisher: | E SCHWEIZERBARTSCHE VERLAGS |
Issue Date: | 1999 |
ISSN: | 0935-1221 |
Abstract: | The crystal structures of hinsdalite, PbAl3[(P0.69,S0.31)O4)]2(OH,H2O)6, and of a plumbogummite containing a small amount of arsenic, PbAl3[(P0.95,As0.05)O4)]2(OH,H2O)6, have been refined in space group R3m, with a = 7.029(4) and c = 16.789(4) Å, and a = 7.039(5) and c = 16.761(3) Å, respectively. The refinements, using 258 (plumbogummite: 297) observed reflections with I≥ 3σ (1), led to R =3.0 % (3.7 %) and RW = 3.0 % (3.2 %). Both minerals have the beudantite/crandallite structure type with hinsdalite being characterised by disordered (P,S)O4 tetrahedra with an average (P,S)-O distance of 1.52 Å. The Pb atoms in both minerals are displaced from the origin and are disordered about their sites, as in other Pb containing members of the alunite family (beudantite, kintoreite, and plumbojarosite). The disorder of the Pb atoms is confined to the (0001) plane; in hindsdalite, Pb is at (0.0312, 0.0312, 0.0), while in plumbogummite it is at (0.0409, 0.0409, 0.0). Pb-O distances average 2.79 Å in both minerals. The hydrogen-bonding networks are modelled with the help of bond-valence summations. |
Keywords: | hinsdalite plumbogummite crystal structure lead crandallite group |
Rights: | © 1999 E. Schweizerbart'sche Verlagsbuchhandlung |
DOI: | 10.1127/ejm/11/3/0513 |
Published version: | http://dx.doi.org/10.1127/ejm/11/3/0513 |
Appears in Collections: | Aurora harvest 6 Chemistry publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.