Chalcopyrite with spharelite and quartz. From Wheal Friendly, St Agnes, Cornwall. Philip Rashleigh collection. 

Crystalline native copper on quartz. From Wheal Virgin, St Day, Cornwall. Presented by W.M. Tweedy.

Chalcopyrite on quartz. From Tincroft Mine, Illogan, Cornwall. Philip Rashleigh collection.

Tetrahedrite on quartz. From Crinnis Consols, St Austell, Cornwall. 

Chalcocite on chalcopyrite “blister copper”. From Cook’s Kitchen Mine, Illogan, Cornwall. Philip Rashleigh collection.