Abstract
The surface morphology of the best developed faces of emerald and red beryl single crystals grown from high-temperature hydrothermal solutions has been studied by atomic force microscopy. The results attest to dislocation-mediated layer-by-layer growth of the faces. Using experimentally determined growth front profiles, the fractal dimensions D Fp and D Fa of the faces are evaluated to be 1.1–1.4. These values indicate that the surfaces studied have a fractal character and can be investigated using elements of fractal theory.
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