Collenia undosa

Notes specific to this specimen: Beautiful deep red agatization in these cross-cut colonies attest to the classic origin of this specimen as being from the old Mary Ellen Mine in Biwabik, Minnesota, the type locality for the Biwabik Iron Formation. The mine shut down over 50 years ago. We find these specimens in the old discard piles that surround the old pit. *This specimen comes with a Certificate of Authenticity and Origin.

Size: 4.5″x 4.5″x 3/8″

Name: Collenia undosa
Unit: Biwabik Iron Formation
Site: Biwabik Iron Range, Minnesota
Date: Mid 1990s
By: Jon & Julie

Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.

Notes specific to this specimen: Beautiful deep red agatization in these cross-cut colonies attest to the classic origin of this specimen as being from the old Mary Ellen Mine in Biwabik, Minnesota, the type locality for the Biwabik Iron Formation. The mine shut down over 50 years ago. We find these specimens in the old discard piles that surround the old pit. *This specimen comes with a Certificate of Authenticity and Origin.

Size: 4.5″x 4.5″x 3/8″

Name: Collenia undosa
Unit: Biwabik Iron Formation
Site: Biwabik Iron Range, Minnesota
Date: Mid 1990s
By: Jon & Julie

Documentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.