Atomic force microscopy of a (001) cleavage surface revealed exsolution lamellae, wave-like (001) surfaces on Na-rich lamellae, and surface steps with heights of about 0.6 or 0.3nm. The wave-like shape of the (001) surfaces of albite twin domains was traced to the surface relaxation of periodic twin domains. Both twin boundary and twin composition planes were parallel to (010). Three-dimensional atomic force microscopic images revealed surface height differences between Na-rich and K-rich lamellae in some areas. This indicated that the boundaries were semi-coherent along the c-axis.

H.Xu: Materials Research Bulletin, 1997, 32[9], 1221-7