Fig. 3e Swapped myrmekite grains (double row, center) occur on the boundary between two differently oriented perthitic K-feldspar crystals, (K₁, blue purple, top and K₂, violet with orange lamellae, bottom). Notice that the albite-twinning plane (010) of the top row plagioclase of myrmekie (containing yellow quartz vermicules) is nearly perpendicular to the cleavage (001) of the K-feldspar K₂ (bottom, on other side of the lower row of myrmekite grains), indicating the same orientation that K₂ and the upper myrmekite have. Bar scale of 0.5 mm length; lower right. Location of sample is unknown.