You can also use HCl with a steel nail to see if a rock or mineral has copper in it but H2SO4 works better. Grab a copper carbonate such as malachite, add a drop of acid. It will react demonstrating it contains calcium. Then rub your clean nail on it and it will become copper plated.
You can also use HCl with a steel nail to see if a rock or mineral has copper in it but H2SO4 works better. Grab a copper carbonate such as malachite, add a drop of acid. It will react demonstrating it contains calcium. Then rub your clean nail on it and it will become copper plated.
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