end-battered; green-grey; possible rust stains; some dents on ventral surface; surface dirt

end-battered; black; could be basalt; possible rust stains; dents on both surfaces

grey; surface dirt; chip CR; rust coloured inclusions

fragment; grey; surface dirt; possible rust stains; chip TC

black; chip TR; surface dirt; secondary; medium grained

fragment; small; grey with brown patina; rust coloured inclusions

black; surface dirt; secondary; chip BC; stain on cortex

fragment; black; secondary; rust coloured inclusions; surface dirt

dark grey with brown patina; secondary; residue on dorsal surface; chip TR; surface dirt

dark grey; surface dirt; one white inclusion