Specimens of chalcopyrite from France. Samples show a very pure chalcopyrite and may show small amounts of peacock ore and quartz, this gives the pieces an extremely attractive appearance. Chalcopyrite is a well known copper iron sulphide mineral and also a major copper ore, it has a brassy yellow colour and a metallic lustre, however, overtime, this lustre can dulls as oxidation takes place. This mineral, like many other ore minerals forms through volcanogenic processes often being deposited as sulfide ore deposits, as such it can often be found in ore veins, although it can form by other processes too. Specimens are supplied in a white card tray with an information label, these samples would make an excellent addition to any mineral collection though they could also serve as a educational specimen.