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Type 2b (Duff). The stone type borders between Argillite and Greywacke with some areas of fine texture and other areas of more grainy quality. Grey green in overall colour with some thin dark streaks and bands of colour. the majority of surface is smooth. There are multiple flaking scars which are mostly concentrated near the edges though one large one is situated in the middle underblade area (major curved cutting edge side). More recent chips are evident on the cutting edge, one large chip on one corner of the cutting edge. Surface scratches evident from manufacture.