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Bring it into the edge of a hot gas flame. The presence of copper would be indicated by a blue tinged flame.
Whether an ore or rock might be indicated by the geology maps or mining history of the area where it was found.
Bring it into the edge of a hot gas flame. The presence of copper would be indicated by a blue tinged flame.
Whether an ore or rock might be indicated by the geology maps or mining history of the area where it was found.