I'm doing a project and I need to know within the next few days what exactly an ore is when extracting copper.
An ore is a rock that contains some desired substance in a higher concentration (hopefully, much higher) than is found in ordinary rock. For example, copper sulphide contains copper and you might find rock containing seams of copper sulphide. They will not likely be pure copper sulphide, but five percent of the rock mass might be copper sulphide. Some distance away, the amount of copper (whether as sulphide, sulphate, carbonate, whatever) might be a thousandth of a percent or less. Attempting to extract copper from such rock would not be worth the effort. Asking a question with proper grammar would help. Do you mean What is [the name of] an ore [from which] extracting copper [is easy], to use your word order.
