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These ore bodies range from around 10 million to >4,000 million tonnes of contained ore, and have a grade of between 0.2% and 5% copper, with gold contents ranging from 0.1 to 1.41 grams per tonne. [2]
The metal reacts with fluorine (F 2) at 520 K to give CoF 3; with chlorine (Cl 2), bromine (Br 2) and iodine (I 2), producing equivalent binary halides. It does not react with hydrogen gas ( H 2 ) or nitrogen gas ( N 2 ) even when heated, but it does react with boron , carbon , phosphorus , arsenic and sulfur. [ 19 ]