Structure trivial names and Strukturbericht symbols

8 Structure trivial names and Strukturbericht symbols As a conclusion to the presentation of the rational nomenclature and symbolism of the intermetallic phases, it must be mentioned that a number of trivial names and symbols have been used and, due to historical reasons, are still in use both as indicators of a single phase in specific systems, or as descriptors of certain structural types or of families of different interrelated structural types. 

In a few cases, however, certain Greek and Roman letters have assumed a more general meaning as symbols of groups of similar phases for instance, the name 

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