Copper - WikipediaCopper is a chemical element with symbol Cu (from Latin: cuprum) and atomic number 29. . Native copper (~4 cm in size) ... The maximum permissible current density of copper in open air is approximately 3.1×106 A/m2 of .. The concentration of copper in ores averages only 0.6%, and most commercial ores are sulfides,.what is the maximum size of copper ore,World-class Copper Deposits | Investing News NetworkAug 25, 2016 . Porphyry copper deposits are the largest source of ore, supplying nearly . but the deposit is still economic due to the large size of the resource.
what is the maximum size of copper ore