Copper

Copper (aka Industrial Grade Copper) is a basic and common material added to the game. Despite it being relatively common, it is still very useful throughout the game. Although, it is more useful when combined with Redstone to make Red Copper.

Obtention
Its primary way of obtention is by mining. It is fairly common.

Uses
Numerous technological purposes

It can be made into plates and wires for various uses

Trivia

 * Copper becomes green when exposed to oxygen.
 * This chemical reaction is called oxidation.
 * Copper ore is actually green due to this oxidation.