The crystal structure of mawbyite, PbFe2(AsO4)2(OH)2

Kharisun, M. R. Taylor, D. J M Bevan, A. D. Rae, A. Pring

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    26 Citations (Scopus)


    The crystal structure of mawbyite, PbFe2(AsO4)2(OH)2 has been refined. The mineral is monoclinic, C2/m with a = 9.066(4), b = 6.286(3) c = 7.564(3) Å, β = 114.857(5)°, Z = 2; the structure has been refined to a conventional R = 4.3% using 361 observed reflections [I> 3σ(I)]. The structure contains chains of edgesharing Fe(O,OH)6, octahedra which are linked by AsO4 tetrahedra and Pb atoms in distorted square antiprismatic co-ordination. The hydrogen bonding network in the structure has been modelled using bond valence calculations. Mawbyite is confirmed to be isostructural with tsumcorite and dimorphous with carminite and the relationship between these two structures is discussed.

    Original languageEnglish
    Pages (from-to)685-691
    Number of pages7
    JournalMineralogical Magazine
    Issue number408
    Publication statusPublished - 1 Oct 1997


    • Arsenate
    • Broken Hill
    • Crystal structure
    • Mawbyite
    • New South Wales


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