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Station 12, south side of island, in Escanaba River, just above paper mill at Groos

Delta County, Michigan
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Next site in MichiganBanks of Escanaba River, below power dam at Chandler Falls · 2 mi

Can I collect here?

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Based on our latest records, with claims updated from the BLM on Oct 3, 2026. Land and claims can change quickly, so check before you go.

Minerals on record here

1 mineral

Recorded here: fossil.

Nearby sites

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About Station 12, south side of island, in Escanaba River, just above paper mill at Groos

Station 12, south side of island, in Escanaba River, just above paper mill at Groos is a fossil collection site in Delta, Michigan, cataloged in the Paleobiology Database. Fossils here come from the Groos Quarry Formation, dated to the Edenian (451–450.2 million years ago). The depositional environment is recorded as carbonate indet. Documented finds include Flexicalymene croneisi, Flexicalymene (Flexicalymene) senaria, Flexicalymene senaria parvicephala.

Geologic setting

Formation
Groos Quarry
Geologic interval
Edenian
Age
451–450.2 Ma
Depositional environment
carbonate indet.
Recorded occurrences
3

Fossils found here

Flexicalymene croneisi
Trilobita · Calymenidae
Flexicalymene (Flexicalymene) senaria
Trilobita · Calymenidae
Flexicalymene senaria parvicephala
Trilobita · Calymenidae

Records and references

Data: Paleobiology Database collection 75951 (CC BY 4.0) — view the source record

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Questions about Station 12, south side of island, in Escanaba River, just above paper mill at Groos

Can you collect at Station 12, south side of island, in Escanaba River, just above paper mill at Groos?

It depends on who owns the land and whether a mining claim covers it. BLM land usually allows hand collecting for personal use, national parks allow none, and private land needs the owner’s permission. Pro members see the owner and any claims at this spot.

What minerals are found at Station 12, south side of island, in Escanaba River, just above paper mill at Groos?

Fossil.

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Source: Paleobiology Database.