These specimens come from the William Serjeant collection circa 1880.The bottom specimen looks to have originated form the Southern granite mass and is from Goss Moor. The remaining two from Tregoss Moor are more likely to have come from the North.
A large and very heavy 6.5kg block of solid Galena. How the miners missed this is a mystery? The only reason I can put forward is they were fooled by a thin deposit of pyrite on the surface and it was discarded as pyrite.