Spectrophotometry of gold(III) halides

TL;DRAbstract

A number of complex processes are involved in the formation of gold deposits. Investigation of the chemical and thermodynamic properties of the metal during the three critical processes of mobilisation, transport and deposition in the regolith will lead to an improved theoretical basis for understanding observed mineralisation and dispersion patterns. Developing this understanding is of practical utility for geochemical prospecting in the regolith, having applications to the discovery of placer deposits, supergene mineralisation and the location of primary ore deposits under cover. Despite the perception of gold as a “noble” metal and highly resistant element, it is mobile in a range of weathering environments in a variety of forms and has been directly observed to exist in three oxidation states in the natural environment: Au(0); Au(I); and, Au(III) (Boyle 1979). All of these states are potentially mobile so knowledge of the speciation behaviour of the element in a given environment i

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