The type is frequently known as the ‘Chalk’ amphora.
Our sample is a very hard brown-red (5YR 6/6) fabric with tan (7.5YR 7/4-6/4) surfaces, a rough feel and hackly fracture. Typically sherds may have a cream outer surface (Peacock & Williams 1986, 201).
This fabric is composed of a slightly golden micaceous clay containing ill-sorted inclusions. Small quartz (0.1–0.2mm) is common, while larger inclusions comprise common quartz, and sparse feldspar (normally 0.1–1.0mm), red-brown and black rock fragments and limestone (both 0.5–3.0mm).
A calcareous clay with sparse quartz silt, which contains common coarse to very coarse subangular sand-grade material, composed mainly of quartz, together with sparse grains of untwinned feldspar, chert, limestone and other rock fragments. Occasional subrounded grains of altered lava, and a single grain of pyroxene (c 1.0mm) are also present. Subangular grains of amphibole up to 0.3mm, plagioclase feldspar, biotite and zircon occur rarely.
No source can be suggested for this amphora type.
Castle Museum, Norwich
Colchester Museums; Castle Museum, Norwich
Darling, M J, 1993 The Roman pottery, in Caister-on-Sea: excavations by Charles Green 1951–1955 (M Darling with D Gurney) East Anglian Archaeol 60, 153–218
Peacock, D P S, 1977d Late Roman amphorae from Chalk near Gravesend, Kent, in Roman pottery studies in Britain and beyond. Papers presented to John Gillam, July 1977 (eds J Dore & K Greene), BAR Suppl Ser 30, 295–300
Symonds, R P, & Wade, S, 1999 Roman pottery from excavations in Colchester, Colchester Archaeol Rep 10