Zollverein Mining Products - sample of galena and grey copper ore, from the Concordia Mine, Niederfischbach, Germany

Zollverein Mining Products - sample of galena and grey copper ore, from the Concordia Mine, Niederfischbach, Germany

Zollverein Mining Products - sample of grey copper ore, Schwabengrube, Müsen, Germany

Zollverein Mining Products - sample of vitreous copper, Vorschung, Ruhr-Sieg Railway, Germany

Zollverein Mining Products - sample of copper slate with purple copper, Mansfeld Company for Mining and Smelting, Germany

Copper, with cuprite and chrysocolla, from Coquimbo, Chile

Galena copper pyrites, Zeus, Niederfischbach, Germany