A slate worker’s mallet or ‘beetal’.

A slate worker’s chisel.

Biotite mica and orthoclase, or pegmatite.

Luxullianite, an altered granite of pink orthoclase feldspar, tourmaline and quartz. From Luxulyan, Cornwall.

Coarse grained pink/grey granite, or pegmatite

Photograph showing quarry workers sitting on top of an enormous granite boulder at Polkanuggo Quarry, Stithians, Cornwall in 1902.

Orthoclase, biotite mica and schist, or pegmatite.

Slate Totting Board. From Delabole Slate Quarry, 1887.

Large grained red/grey granite, or pegmatite. From Wheal Vivian, Constantine, Cornwall.