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Figure 2
SEM pictures of Tuzkoy's tuff and erionite fibres. (a) General overview of the sample (tuff). Erionite fibres are scarce in the matrix. (b) and (c) Representative high-resolution SEM-FEG images of fibre bundles. Erionite fibrils are grouped in tabular bundles with variable widths (W: between 2 and 11 µm) and an average length of 31 µm (L: between 15 and 47 µm). (d) Single fibril of erionite found in the sample.

IUCrJ
Volume 10| Part 4| July 2023| Pages 397-410
ISSN: 2052-2525
https://doi.org/10.1107/S2052252523003500