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![[Figure 4]](co5089fig4mag.jpg)
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Figure 4
Linear variations of structural parameters. (a) The average 〈Pb1—O〉 [9] distances increase linearly with V. (b) The Pb2—Cl distance increases linearly with V. The (c) average 〈Pb2—O〉 [6] and (d) 〈Pb2—O6,Cl2〉 [8] distances increase linearly with V. (e) The average 〈B—O〉 distance and (f) effective ionic radii (Shannon, 1976  ) increase linearly with V. Mimetite and vanadinite have similar structural parameters. Some discrepancies are observed between the present data and some of those from the literature, especially for the 〈B—O〉 distance from Hashimoto & Matsumoto (1998) and average 〈Pb2—O〉 [6] and 〈Pb2—O,Cl〉 [8] distances from Okudera (2013). Structural data shown as yellow triangles are from the literature (Dai & Hughes, 1989; Calos et al., 1990; Dai et al., 1991; Hashimoto & Matsumoto, 1998; Laufek et al., 2006; Sejkora et al., 2011; Mills et al., 2012). |
![[Figure 4]](co5089fig4.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
