GRIM - Grimston glazed ware

Moderate clear sub-angular sand, sparse ferrous oxide. Typically dark grey with a paler grey outer margin/surface, but very variable and can be oxidised externally and/or internally. Generally green lead glaze externally, sometimes over brown slip decoration. Congham 'wasters' are identical.

TS description (H. Page): Poorly-sorted, equant to elongate, very coarse to fine, rounded to sub-angular quartz, polycrystalline and microcrystalline quartz. Rare elongate biotite mica, plagioclase feldspar and small rounded, equant chert. Non-calcareous, dark red-brown, vitrified clay matrix. Common meso-vughs. Possibly sand tempered. Secondary micritic calcite is seen in some voids.

Sample from Grimston.

GRIMT - Grimston-type glazed ware

Outwardly similar to Grimston ware, but in section the sherds tend to be siltier with less abundant sand and more abundant ferrous oxide which is generally softer and more orange than the hard brown ferrous oxide in the standard fabric.

This type seems to occur particularly in central Norfolk, and is similar to Gayton Thetford-type ware in section, with chemical similarities to some samples from Grimston.

Sample from Little Melton.

GRIM - Grimston glazed ware

Moderate clear sub-angular sand, sparse ferrous oxide. Typically dark grey with a paler grey outer margin/surface, but very variable and can be oxidised externally and/or internally. Generally green lead glaze externally, sometimes over brown slip decoration. Congham 'wasters' are identical.

TS description (H. Page): Poorly-sorted, equant to elongate, very coarse to fine, rounded to sub-angular quartz, polycrystalline and microcrystalline quartz. Rare elongate biotite mica, plagioclase feldspar and small rounded, equant chert. Non-calcareous, dark red-brown, vitrified clay matrix. Common meso-vughs. Possibly sand tempered. Secondary micritic calcite is seen in some voids.

Sample from Congham.

GRIM - Grimston glazed ware

Moderate clear sub-angular sand (white and clear), sparse ferrous oxide. Typically dark grey with a paler grey outer margin/surface, but very variable and can be oxidised externally and/or internally. Generally green lead glaze externally, sometimes over brown slip decoration.

Microscope sample from Eye, Suffolk.