Fish Fossil - Knightia Eoceana Geode pyrite is an abundant sulfide

pyrite is an abundant sulfide mineral that despite some similarities can easily be distinguished from actual gold by its crystal form (typically cuboidal) and being much harder whereas gold is soft and malleable

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

Each specimen is expertly prepared

Beautifully preserved on slabs of flat shale

These remarkable yellow fluorite crystals originate from China and range in color from rich honey to pastel gold

Fish Fossil - Knightia Eoceana Geode pyrite is an abundant sulfideDuring 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