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Raman (micro)spectrometry is used as a technique for the understanding and identification of the fabrication technology of ancient faience and glazed terra cotta from Dougga, north-west of Tunisia. Studied samples are assigned to zirides (XI-XIIth), almohades (XIII-XVth), hafsides and ottomane (XVII-XVIIth) periodes. Cassitérite (SnO2) white, (Pb2Sb,O7) Naples yellow, black and (Fe/Mn ?) brown spinels, haematite (Fe2O3) black and unassigned blue pigment have been characterized. Green colour results from glaze doping (by Cu ?), except for recent samples where woUastonite phase, easely colored in green by chrome, is found. A cassiterite-free overglaze is often present. Cassitérite amounts appear too low in ancient samples to really opacify the enamel.
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