Term: lamellar crystal
https://doi.org/10.1351/goldbook.L03446

Definition:
A type of crystal with a large extension in two dimensions and a uniform thickness. A lamellar crystal is usually of a thickness in the 5-50 nm range, and it may be found individually or in aggregates. The parallel chain stems intersect the lamellar plane at an angle between 45° and 90°. The lamellae often have pyramidal shape owing to differences in the fold domains; as a result, one can deduce different fold planes and fold surfaces from the lamellar morphology.

Related Terms:
1) angle (http://doi.org/10.1351/goldbook.A00346).
2) morphology (http://doi.org/10.1351/goldbook.MT07285).

Source: Purple Book, 1st ed., p. 81 (http://old.iupac.org/publications/books/author/metanomski.html)

Citation: 'lamellar crystal' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.L03446

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