‘Blue-’ and ‘Brown-speckled’ pottery from Qalhât, the Sultanate of Oman (13–16th centuries): Comparison with traditional Omani 19–20 century productions
| Autor: | Hélène Renel, Aleksandar Kremenović, Philippe Colomban, Liliana Gianni |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Calcite
020502 materials Glaze Dolomite Geochemistry 02 engineering and technology Hematite engineering.material Industrial and Manufacturing Engineering chemistry.chemical_compound Albite Augite 0205 materials engineering chemistry Mechanics of Materials visual_art Ceramics and Composites visual_art.visual_art_medium engineering Pottery Quartz Geology |
| Zdroj: | Boletín de la Sociedad Española de Cerámica y Vidrio. 61:13-26 |
| ISSN: | 0366-3175 |
| Popis: | Representative ‘Blue speckled’ (13–16th centuries) and ‘Brown speckled’ (13–21st centuries) wares recovered from the excavations in Qalhât or collected around Bahlâ city (Sultanate of Oman) were characterized by XRPD, SEM-EDS, Raman/optical microspectroscopy, and thermal expansion. Minerals present in the body (quartz, augite and albite as major phases, calcite, dolomite, rutile, anatase, phosphate, hematite and magnetite as minor phases) were identified by XRPD and/or Raman spectroscopy. SEM-EDXS microanalysis was performed on the glazes in order to compare their composition, especially the type of flux. The firing temperatures measured from the thermal expansion curves range between 1080 °C and 1150 °C. This preliminary study confirms that the first differentiation can be made by considering non-invasive Raman technique and thermal expansion measurement is sufficient to get an extensive comparison of the wares. A local place of production is likely for the body of all samples but importation of the glazes of ‘Blue speckled’ wares is questioned. Modern Bahlâ productions cannot be considered to have inherited the Qalhât ones. Ba-rich, cassiterite-opacified glaze corresponding to the Late Islamic Arabic Period appears as a new technology without a connection to the ancient one. |
| Databáze: | OpenAIRE |
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