Fish Fossil - Knightia Eoceana Pyrite These well preserved and larger-sized

These well preserved and larger-sized fossils originate from the Monterey Formation in California

copper has been used by humans as ornamentation

a ghost or phantom of the crystal during its formation still remaining in the interior

in iron smelting and other metallurgy

Copper is a so-called native metal

Fish Fossil - Knightia Eoceana Pyrite These well preserved and larger-sizedDuring the Eocene, 40 50 million years ago, vast shoals of freshwater fish inhabited a large shallow inland sea across the American West. The herring like fish of the genus Knightia were far and away the most abundant freshwater fish during this era, and because of this they are one of the most frequently found vertebrate fossils on earth. Originating from the famed Green River Formation in Wyoming, fossils of Knightia eocaena and their close