… Copper ores and concentrates. …
Explanatory notes
… 26.03 ‑ C opper ores and concentrates. The principal ores generally classified in this heading are : (a) Atacamite, … (b) Azurite , basic copper carbonate. (c) Bornite (or erubescite), sulphide of copper and iron. (d) Bournonite , …