Definitions for "BASE METALS"
Keywords:  zinc, precious, tin, nickel, copper
Those metals usually considered to be of lesser value and of greater chemical reactivity compared to the noble (or precious) metals, most commonly copper, lead, zinc and tin.
Metals that are mined but not considered precious. Examples include copper, lead, zinc, and tin.
Metals other than gold and silver such as aluminium copper, lead, nickel and zinc. These are traded on the London Metal Exchange as well as other major centres.