Azurite [Cu 3 (CO 3 ) 2 (OH) 2 ] is a copper carbonate mineral. It owes its name to its beautiful azure-blue color,which makes it a very popular and well-known mineral. It usually occurs with green Malachite, whichmay form green stains or specks on Azurite crystals or aggregates. The two minerals sometimes occuradmixed or […]