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The three-dimensional morphology of topologically close packed phases (TCP) in an experimental 6 wt% rhenium-containing superalloy is examined with focused ion beam tomography and compared to the existing knowledge gained with classical microscopy of two-dimensional cross-sections. The results show completely new insights compared to investigation of cross-sections. With the new technique, three different types of TCP-phase morphologies and the orientation of their growth planes could be identified: complex shaped plates, needles, and laths. In the classical cross-section, they all appear to be needles. A part of the needles is penetrating the plate-like precipitates. Possible conclusions on the growth mechanism are discussed.