Fossil Gingko Leaf (Ginkgo adiantoides) - North Dakota Those who collect primarily copper-based

Those who collect primarily copper-based minerals may not even have specimens like this n their collection

Some research suggests the impact of a meteorite may have caused it

This tooth possesses a very nice curvature to its shape

big or small

Chalcanthite is a water-soluble sulfate mineral that gets its name from the ancient Greek words χαλκός

Fossil Gingko Leaf (Ginkgo adiantoides) - North Dakota Those who collect primarily copper-basedThis fossil comes from the famous Fort Union Formation, living around 60 million years ago. The Gingko genus is one of the oldest living ones found on Earth today. Many of its species were thriving during the time of the dinosaurs. The only living fossil still found today is the species Gingko biloba. Because of the status of these plants, fossils from their ancestors are often highly sought after and make their way into private collections fairly