Natural has found precious metal ore. It as a newer break on small edge that gives a hint to the interior. Gold, silver copper ore, highly mineralized with quartz. 1800s Ore Knob Copper Mine North Carolina ore specimen. A deep earth mine that was incorporated in the mid 1800s, history goes back further than the incorporation date, early United States Mine ore specimen precious metals ore. History can be found online using most search engines. Old ore relic that was brought to the surface in the early 1800s. Historical registered United States mining specimen. Measurements from the longest points are 5-1/4 inches x 4-7/8 inches x 3 inches. about 2-1/2 lbs.+