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" The colors and designs were induced by a mineral spring containing iron oxides
Argentenian Blue Calcite is a transparent to opaque stone that is pale blue to medium blue
Knightia eocaena
The history of earlier contributions by wikipedians is accessible to researchers here:
Eocene Petrified Hardwood | Eden Valley, WY stone " The colors and designsThis 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
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