Eocene Petrified Hardwood | Eden Valley, WY stone Argentenian Blue Calcite is a

Argentenian Blue Calcite is a transparent to opaque stone that is pale blue to medium blue

abrasive tundra grasses and sedges

specimens of Diplomystus

Knightia eocaena

and resembled the former closely enough that both Knightia alta and Knightia eocaena were originally described as species of true herring in the genus Clupea

Eocene Petrified Hardwood | Eden Valley, WY stone Argentenian Blue Calcite is aThis Rare Petrified wood was collected on private land near Eden Valley in Wyoming. Eocene, epoch. Dimensions: approx 2. 5" x 4. 75" specimen Petrified Wood formed when the original trees and branches were rapidly buried under sediment and were initially preserved due to a lack of oxygen some 50 million years ago. Petrifaction occurs when water that contains inorganic minerals, such as calcium carbon ate or silica, passes slowly through the organic