QUASICRYSTALLOGRAPHY ON THE SPIRAL OF ARCHIMEDES

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Abstract
The concept of a spiral lattice is discussed. Some examples of known mineral structures, namely clino-asbestos, halloysite and cylindrite, are then interpreted in terms of this structural principle. An example of a synthetic sulphide catalyst spiral structure having atomic dimensions is also described. All of these inorganic spiral structures are based on the spiral of Archimedes. The principles for a new type of crystallography, based on the Archimedian spiral, are then presented.

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