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Dr
David
Williams
Dept of Archaeology
University of Southampton
Avenue Campus
Highfield
Southampton
SO17 1BJ
England
Tel: 080 593032
Schörgendorfer 558 fabric |
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Visual characteristicsThe outer surface of the amphora is in most cases creamy-buff (5YR 7/4), but sometimes varies between reddish-yellow (5YR 7/6) and buff (7.5YR 7/4 – 10YR 8/4). The clay is fine, hard and well fired. Small quartz grains and muscovite mica can be seen in the fabric. |
PetrologyPetrographically there are three different groups among the Vindobona amphorae: Group “Aa” is probably a version of group “Ab”. However, it may have been fired at a higher temperature than group “Ab”. The frequency of inclusions are moderate (9%). The average size of the inclusions is 0.2 mm – and none of them exceeds 0.4 mm. In group “B” the largest grains are 0.9 mm. The proportions of the individual components are similar (7%). There is a slight difference among the heavy minerals. In the group “Ac” the frequency of the inclusions are common (12%). The average size of the inclusions is 0.4 mm, the maximum 2.3 mm. The different grain sizes make this group distinct from the other two. On the basis of the geological data, the production site should be located in northern Italy: Padua or the region of Lake Garda are likely candidates. Roman Sauer |