African Archean Fossil

This specimen is thought to be over 2.5 billion years old. Bacteria and algae appeared at this time in the water.  Volcanic activity produced increased atmospheric pressure and temperature.  The higher temperature caused serpentization of the sediments thus the green color. In between the layers the micro stromatolites (like algal mats).

This fossil was found in southern Africa's Greenstone Belt.  Its green color definitely matches the formation name.  Unique about the fossil material is it is called butterstone dated to the geologic eon Archean.
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In addition, here are pictures of oolitic agate formed on a Wyoming seafloor during the Eocene. Check it out on eBay: CLICK HERE

Archean Polished Butterstone

This rock was found in southern Africa's Greenstone Belt.  The color of the rock definitely matches the formation name.  What is special about this rock called butterstone dated to the geologic eon Archean.  Thus the material is thought to be over 2.5 billion years old.

Bacteria and algae appeared at this time in the water.  Volcanic activity produced increased atmospheric pressure and temperature.  The higher temperature caused serpentization of the sediments thus the green color. In between the layers the micro stromatolites (like algal mats).

This fossil is for sale on eBay: CLICK HERE and another is for sale (ending October 11, 2011): CLICK HERE

Archean Butterstone

Here is a fossil that is sold in the United States described as an Archean butterstone from the Greenstone Belt of South Africa. The rock is over 2.5 billion years old and may contain blue-green algae stromatolites.