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https://hdl.handle.net/2440/53565
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Type: | Journal article |
Title: | Crystal chemistry of mimetite, Pb₁₀(AsO₄)₆Cl₁.₄₈O₀.₂₆, and finnemanite, Pb₁₀(AsO₃)₆Cl₂ |
Other Titles: | Crystal chemistry of mimetite, Pb(10)(AsO(4))(6)Cl(1).(48)O(0).(26), and finnemanite, Pb(10)(AsO(3))(6)Cl(2) |
Author: | Baikie, T. Ferraris, C. Klooster, W. Madhavi, S. Pramana, S. Pring, A. Schmidt, G. White, T. |
Citation: | Acta Crystallographica. Section B: Structural Science, Crystal Engineering and Materials, 2008; 64PN Part(1):34-41 |
Publisher: | Munksgaard Int Publ Ltd |
Issue Date: | 2008 |
ISSN: | 0108-7681 0108-7681 |
Statement of Responsibility: | Tom Baikie, Cristiano Ferraris, Wim T. Klooster, S. Madhavi, Stevin S. Pramana, Allan Pring, G. Schmidt and T. J. White |
Abstract: | The crystal chemistries of synthetic mimetite, Pb(10)(As(5+)O(4))(6)(Cl(2 - x)O(x/2)), a neutral apatite, and finnemanite, Pb(10)(As(3+)O(3))(6)Cl(2), 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 P6(3)/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. |
Keywords: | Lead Crystallography, X-Ray Spectrum Analysis Temperature Molecular Structure |
DOI: | 10.1107/S0108768107066402 |
Published version: | http://www3.interscience.wiley.com/journal/119398512/abstract |
Appears in Collections: | Aurora harvest Earth and Environmental Sciences publications |
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