Stromatolite
Banded Iron Deposit Stromatolites
(hand
polished)
Geological
Time: Archaean, 2.87 Billion Years Old
Size (25.4
mm = 1 inch): Stromatolite is 190 mm by 120 mm (maximum)
Fossil Site:
Goldman Meadows formation, Atlantic City Iron Mine, South Pass, Wyoming
Code: ST97
Price: Sold
Description:
This banded iron is metasediment (sediment that has undergone
metamorphism) resulting in the midnight black coloration. Minute
crystalline forms of other mineral-based compounds are also present;
Whether the sediment was of bioorganic origin (stromatolite)
is indeterminable, but likely. The
specimen has been hand-polished to a glassine finish on one side
with fine carbide and diamond
abrasive, a very labor-intensive
job.
Stromatolites
have persisted to the modern day in such places as Shark Bay,
Australia where they continue their billions of
years
old lifestyle. While this piece would make a fine present for
any natural history buff, anyone who appreciates art would
also be
glad to get thus wonderful specimen as a gift. |
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