The crystal structure of carminite: Refinement and bond valence calculations

Kharisun, Max R. Taylor, D. J.M. Bevan, Allan Pring

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)

    Abstract

    The crystal structure ofcarminite. PbFe2(AsO4)2(OH)2 has been refined. The mineral is orthorhombic, Cccm with a = 16.591(2), b = 7.580(1). c = 12.285(1) Å, Z = 8; the structure has been refined to a conventional R = 3.3% using 913 observed reflections [1>2σ(I)]. The structure contains stepped chains of edge-sharing pairs of Fe(O,OH)6 octahedra: these chains 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.

    Original languageEnglish
    Pages (from-to)805-811
    Number of pages7
    JournalMineralogical Magazine
    Volume60
    Issue number5
    DOIs
    Publication statusPublished - 1 Oct 1996

    Keywords

    • Carminite
    • Crystal structure refinement
    • Hydrogen bonding network

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