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Iron Stromatolites (ME11)
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″ x 4″ x 1/8 – 3/8″
Name: Collenia undosa
Unit: Biwabik Iron Formation
Site: Biwabik Iron Range, Minnesota
Date: Mid 1990sDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$285.00Iron Stromatolites (ME11)
$285.00 -
Iron Stromatolites (ME10)
Notes specific to this specimen: Nice longitudinal colonies from the classic location of 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: 5.5″ x 6″ x 3/8″
Name: Collenia undosa
Unit: Biwabik Iron Formation
Site: Biwabik Iron Range, Minnesota
Date: Mid 1990sDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin.
$320.00Iron Stromatolites (ME10)
$320.00 -
Banded Iron Formation (BIF7)
Notes specific to this specimen: A classic specimen from a classic locality. Red jasper alternating with hematite silver banding. One side polished, the other sawn.
SIZE: 2.5″x 4.5″x 3/8″
MINERALS: Jasper & Hematite
AGE: Paleoproterozoic – 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Ishpeming, Michigan
COLLECTED: 2025
BY: Julie & JonDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$85.00Banded Iron Formation (BIF7)
$85.00 -
Banded Iron Formation (BIF6)
Notes specific to this specimen: A classic specimen from a classic locality. Red jasper alternating with hematite silver banding. One side polished, the other sawn.
SIZE: 2.5″x 5″x 3/8″
MINERALS: Jasper & Hematite
AGE: Paleoproterozoic – 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Ishpeming, Michigan
COLLECTED: 2025
BY: Julie & JonDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$95.00Banded Iron Formation (BIF6)
$95.00 -
Banded Iron Formation (BIF5)
Notes specific to this specimen: A classic specimen from a classic locality. Red jasper alternating with hematite silver banding. One side polished, the other sawn. Curious red spot inside one of the silver bands.
SIZE: 2″x 4″x 3/8″
MINERALS: Jasper & Hematite
AGE: Paleoproterozoic – 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Ishpeming, Michigan
COLLECTED: 2025
BY: Julie & JonDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$90.00Banded Iron Formation (BIF5)
$90.00 -
Banded Iron Formation (BIF4)
Notes specific to this specimen: A classic specimen from a classic locality. Red jasper alternating with hematite silver banding. One side polished, the other sawn. Curious red spot inside one of the silver bands.
SIZE: 2″x 4″x 3/8″
MINERALS: Jasper & Hematite
AGE: Paleoproterozoic – 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Ishpeming, Michigan
COLLECTED: 2025
BY: Julie & JonDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$90.00Banded Iron Formation (BIF4)
$90.00 -
Banded Iron Formation (BIF3)
Notes specific to this specimen: A classic specimen from a classic locality. Red jasper alternating with hematite silver banding. One side polished, with some slight saw marks on narrow end with a lower price as a result Back is sawn face.
SIZE: 2″x 5″x 3/8″
MINERALS: Jasper & Hematite
AGE: Paleoproterozoic – 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Ishpeming, Michigan
COLLECTED: 2025
BY: Julie & JonDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$95.00Banded Iron Formation (BIF3)
$95.00 -
Banded Iron Formation (BIF2)
Notes specific to this specimen: A classic specimen from a classic locality. Red jasper alternating with hematite silver banding. End cut with face polished and natural rough back.
SIZE: 4″x 2″x 2″
MINERALS: Jasper & Hematite
AGE: Paleoproterozoic – 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Ishpeming, Michigan
COLLECTED: 2025
BY: Julie & JonDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$80.00Banded Iron Formation (BIF2)
$80.00 -
Banded Iron Formation (BIF1)
Notes specific to this specimen: A classic specimen from a classic locality. Red jasper alternating with hematite silver banding. One side polished, the other sawn.
SIZE: 3″x 5″x 5/8″
MINERALS: Jasper & Hematite
AGE: Paleoproterozoic – 2.1 billion years
UNIT: Negaunee Iron Formation
SITE: Ishpeming, Michigan
COLLECTED: 2025
BY: Julie & JonDocumentation: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$135.00Banded Iron Formation (BIF1)
$135.00 -
Fossil Sand Dollar and Clam (KH24)
Notes specific to this specimen: An outstanding polished Dendraster sand dollar with showy natural petroleum staining and great color pattern, along with some unpolished Psuedocardium clams. All mounted on native matrix with a flat bottom ready to display. Comes with an attractive information card.
Size: 2″x4″x3″Â
NAME: Dendraster (sand dollar) & Psuedocardium (clam)
AGE: Pliocene Epoch – 4 million years
UNIT: Etchegoin Formation
SITE: Kettleman Hills, California
COLLECTED: 2026
BY: Jon KramerDocuments: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$110.00 -
Fossil Sand Dollar and Clam (KH23)
Notes specific to this specimen: An excellent large polished Dendraster sand dollar with great color pattern, along with some unpolished Psuedocardium clams, plus another sand dollar that is unpolished. Both sand dollars show very cool natural petroleum stains. All mounted on native matrix with a flat bottom ready to display. Comes with an attractive information card.
Size: 4″x5″x2″Â
NAME: Dendraster (sand dollar) & Psuedocardium (clam)
AGE: Pliocene Epoch – 4 million years
UNIT: Etchegoin Formation
SITE: Kettleman Hills, California
COLLECTED: 2026
BY: Jon KramerDocuments: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$165.00 -
Fossil Sand Dollar and Clam (KH22)
Notes specific to this specimen: A super-nice large polished Dendraster sand dollar with great color pattern, along with one polished Psuedocardium clam beside a really cool unpolished clam with gnarly original shell material. All mounted on native matrix with a flat bottom ready to display. Comes with an attractive information card.
Size: 3″x4″x2″Â
NAME: Dendraster (sand dollar) & Psuedocardium (clam)
AGE: Pliocene Epoch – 4 million years
UNIT: Etchegoin Formation
SITE: Kettleman Hills, California
COLLECTED: 2026
BY: Jon KramerDocuments: This authentic fossil specimen comes with a Certificate of Authenticity and Origin. In addition, an attractive and informative display card accompanies the specimen.
$185.00