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Fig. 6 | Geochemical Transactions

Fig. 6

From: Cryptomelane formation from nanocrystalline vernadite precursor: a high energy X-ray scattering and transmission electron microscopy perspective on reaction mechanisms

Fig. 6

TEM observation of MndBi10_10y. a Typical crystal size in the ab plane was 5–20 nm, and some crystals had pseudo-hexagonal shape (highlighted with a black dotted line). b Main panel is a view from other crystals from MndBi10_10y. Inset at top left is a magnified view of the zone marked with white dotted line. It shows interference fringes separated by 2.8 Å, typical for δ-MnO2 b lattice parameter. SAED pattern collected in this area (bottom left) shows only weak maxima at 2.42 and 1.40 Å, typical for turbostratic phyllomanganates

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Geochemical Transactions

ISSN: 1467-4866

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