Gillam 1970, type 310-1 (170-210; 180-200)
South Shields, SS77, unstratified. Published: Bidwell and Speak 1994, fig. 8.6, no. 3. Brown core with orange margins and mid-grey surfaces. Soft black inclusions, and rare white quartz.
A. South Shields, 3826 (c.225). Dark grey core and surfaces with noticable fine white inclusions and rare large white inclusions.
Images of other examples