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7.6" Polished Stromatolite (Collenia) Slab - Minnesota
This is a 7.6" stromatolite (Collenia undosa) slab from the Biwabik Iron Formation in Minnesota. The striking red color is a result of the overlying hematite. The slab has been polished to a glossy finish on both sides.
It comes with an acrylic display stand. There is a repaired crack near one corner of this slab.
It comes with an acrylic display stand. There is a repaired crack near one corner of this slab.
About Stromatolites
Stromatolites are fascinating, ancient rock formations created by the activity of cyanobacteria and other microorganisms. These layered, mound-like structures represent some of the earliest evidence of life on Earth, dating back over 3.5 billion years. Often found in shallow, warm waters, stromatolites form as layers of sediment and minerals are trapped and bound by microbial mats, gradually building up over time into unique, textured shapes.
Visually, stromatolites can range from smooth, rounded forms to intricate, banded structures, with colors that span earthy reds, browns, greens, and grays. Each layer captures a record of environmental conditions at the time of its formation, making stromatolites an invaluable source of information for scientists studying Earth’s early history and the origins of life.
Stromatolites are fascinating, ancient rock formations created by the activity of cyanobacteria and other microorganisms. These layered, mound-like structures represent some of the earliest evidence of life on Earth, dating back over 3.5 billion years. Often found in shallow, warm waters, stromatolites form as layers of sediment and minerals are trapped and bound by microbial mats, gradually building up over time into unique, textured shapes.
Visually, stromatolites can range from smooth, rounded forms to intricate, banded structures, with colors that span earthy reds, browns, greens, and grays. Each layer captures a record of environmental conditions at the time of its formation, making stromatolites an invaluable source of information for scientists studying Earth’s early history and the origins of life.
$145
SPECIES
Collenia undosa
LOCATION
Mary Ellen Mine, St. Louis County, Minnesota
FORMATION
Biwabik Iron Formation
SIZE
7.6 x 5", .2" thick
CATEGORY
ITEM
#326050
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