Typical coloured gaseous emissions during cementation, coming from the sealed rim of the crucibles, (the two cylindrical vessels in the centre of the furnace indicated by arrows) that generally occur at cherry-red

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... may undergo thermal peaks that are helpful in archaeological investigations for two found in archaeology, whose interpretation is not simple such as the case of peak temperatures pure secondary authigenic gold crystals (Fig. 1). Secondly, thermal peaks allow an easier emission of gaseous compounds, contributing to the kinetics of the reactions (Fig. 2). Similar experiments conducted by us in electric ovens gave only partial results or unsuccessful outcomes. In summary, for the last three years we have focused on aspects related to: 1) natural misy and its exploitation (a new panorama for mining archaeology) and the classification of different variants of misy; 2) the study of the ...