Stunning Red Mary Ellen Jasper Proterozoic Stromatolites

Stromatolites Collenia undosa

Also Known as Mary Ellen Jasper (an opaque red agate)

Polished on both sides

Geological Time: Precambrian (Proterozoic 2.2 - 2.4 Billion Years Old)

Size: (25.4 mm= 1 inch): 115 by 115 mm; 14 mm thick

Fossil Site: Biwabik Formation, Mary Ellen Mine, Mesabi Range, St. Louis County, Minnesota

Fossil Code: DS2002

Price: Sold


Viewing this specimen it is easy to see why jewelry makers prize this stromatolite from the Mary Ellen Mine in Minnesota, commonly known as Mary Ellen Jasper. As in this piece, the colors displayed can be truly stunning. This one has had BOTH sides and all four edges are polished to make a stunning display from any aspect.

Scientifically known as Collenia undosa, the microorganisms involved were likely to have been photosynthetic bacteria that were busily expiring oxygen that would ultimately constitute the modern atmosphere on earth during a time colloquially termed the “rusting of the earth”. This particular specimen is one of the prettiestI have seen, exhibiting mainly deep, deep red, with areas black and grey metallic. Many areas of the lamination are also present, in a powerful display of science and beauty. Numerous gorgeous jewelry pieces could be made from this one.

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 of the Earth's oldest fossils as a gift.

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