Toggle Main Menu Toggle Search

Open Access padlockePrints

The Newcastle University research output collection, currently available on ePrints, will shortly be moving to a new open repository platform, Figshare. To prepare for the data migration we have paused adding new content to ePrints, and will resume once the new repository is launched. During this time you will continue to have access to ePrints (but no new content will appear). We will share updates here when available.

Crystal chemistry of mimetite, Pb10(AsO4) 6Cl1.48O0.26, and finnemanite, Pb10(AsO3)6Cl2

Lookup NU author(s): Dr Stevin PramanaORCiD

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.

Abstract

The crystal chemistries of synthetic mimetite, Pb10(As 5+O4)6(Cl2-xOx/2), a neutral apatite, and finnemanite, Pb10(As3+O 3)6Cl2, a reduced apatite, were characterized using a combination of X-ray powder diffraction, neutron diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy. Both phases conform to hexagonal P63/m symmetry; however, the temperature-driven transformation of clinomimetite to mimetite described earlier was not confirmed. The average mimetite structure is best described through the introduction of partially occupied oxygen sites. A better understanding of the mixed arsenic speciation in apatites can guide the formulation of waste form ceramics and improve models of long-term durability after landfill disposal. © 2008 International Union of Crystallography Printed in Singapore - all rights reserved.

Publication metadata

Author(s): Baikie T, Ferraris C, Klooster WT, Madhavi S, Pramana SS, Pring A, Schmidt G, White TJ

Publication type: Article

Publication status: Published

Journal: Acta Crystallographica Section B: Structural Science

Year: 2008

Volume: 64

Issue: 1

Pages: 34-41

Print publication date: 01/02/2008

ISSN (print): 0108-7681

ISSN (electronic): 0108-7681

Publisher: Wiley-Blackwell

URL: https://doi.org/10.1107/S0108768107066402

DOI: 10.1107/S0108768107066402

PubMed id: 18204209

Altmetrics

Altmetrics provided by Altmetric

Share