Fig. 6: Phyllosilicate clay van der Waals minerals. | npj 2D Materials and Applications

Fig. 6: Phyllosilicate clay van der Waals minerals.

From: Naturally occurring van der Waals materials

Fig. 6

a, d Three-dimensional representation of the crystal structure of talc168 and vermiculite169. b, e Pictures of mineral rocks of talc and vermiculite13, respectively. c Optical microscopy image of a talc flake, mechanically exfoliated from the bulk crystal shown in b. f Picture of thermally expanded vermiculite13. e, f Reproduced from ref. 13, with permission.

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