Sphalerite, siderite and quartz. From St Agnes, Cornwall. Philip Rashleigh collection. 

Sphalerite and quartz on killas. From St Agnes, Cornwall. 

Sphalerite. From St Agnes, Cornwall. Philip Rashleigh collection. 

Sphalerite, chalcopyrite and quartz. From Poldice Mines, St Day, Cornwall. Philip Rashleigh collection. 

Sphalerite. From Poldice Mines, St Day, Cornwall. Philip Rashleigh collection. 

Sphalerite. From Lambriggan Mine, Perranzabuloe, Cornwall.

Sphalerite. From St Agnes, Cornwall. 

Sphalerite. From Wheal Jane, Kea, Cornwall. Richard Barstow collection. 

Sphalerite. From Old Warren Mine, Ladock, Cornwall. 

Sphalerite with quartz. From Great Wheal Vor, Breage, Cornwall. James Wickett collection. 

Sphalerite, fluorite, quartz and pyrite. From Wheal Wood, St Agnes, Cornwall. 

Sphalerite, pyrite and quartz. From Wheal Jane, Kea, Cornwall. Richard Barstow collection. 

Sphalerite and quartz on killas. From St Agnes, Cornwall. 

Sphalerite, quartz and fluorite. From St Agnes, Cornwall. 

Sphalerite, quartz and siderite in chlorite. From Wheal Rosewarne, Gwinear, Cornwall. James Wickett collection. 

Sphalerite. From Fowey Consols, Tywardreath, Cornwall. Richard Barstow collection. 

Sphalerite. From Fowey Consols, Tywardreath, Cornwall. 

Sphalerite with quartz and chlorite. From Alfred Consols, Phillack, Cornwall. James Wickett collection. 

Bournonite and sphalerite. From Wheal Boys, Endellion, Cornwall. Philip Rashleigh collection.

Sphalerite, quartz and pyrite. From Wheal Trevaunance, St Agnes, Cornwall. 

Sphalerite, quartz and chlorite. From Wheal Trevaunance, St Agnes, Cornwall. Philip Rashleigh collection. 

 Sphalerite with chalcopyrite and quartz. From United Mines, Gwennap, Cornwall.

Sphalerite and quartz. From Wheal Jane, Kea, Cornwall. R.B. Booth collection. 

Sphalerite. From Wheal Friendly, St Agnes, Cornwall.