Abandoned quarry of the Thunder Bay Quarries Company, eastern edge of Alpena
Alpena County, Michigan45.06250, −83.42500
Can I collect here?
ProSee who owns this land and whether it is claimedPro shows the owner, the claim on this spot and every claim within a mile.
Based on our latest records, with claims updated from the BLM on Oct 9, 2026. Land and claims can change quickly, so check before you go.
Minerals on record here
1 mineralRecorded here: fossil.
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About Abandoned quarry of the Thunder Bay Quarries Company, eastern edge of Alpena
Abandoned quarry of the Thunder Bay Quarries Company, eastern edge of Alpena is a fossil collection site in Alpena, Michigan, cataloged in the Paleobiology Database. Fossils here come from the Four Mile Dam Formation, dated to the Givetian (387.95–382.31 million years ago). The depositional environment is recorded as carbonate indet. Documented finds include Spinyplatyceras bartlettense, Euthyrhachis indianense, Striatopora, Thamnopora magniventra, Thamnopora, Atribonium simatum.
Geologic setting
- Formation
- Four Mile Dam
- Geologic interval
- Givetian
- Age
- 387.95–382.31 Ma
- Depositional environment
- carbonate indet.
- Recorded occurrences
- 12
Locality notes
SE ¼ sec. 14, T. 31 N., R. 8 E.,
Fossils found here
Spinyplatyceras bartlettense
Gastropoda · Platyceratidae
Euthyrhachis indianense
Gastropoda · Platyceratidae
Striatopora
Anthozoa · Pachyporidae
Thamnopora magniventra
Anthozoa · Pachyporidae
Thamnopora
Anthozoa · Pachyporidae
Atribonium simatum
Rhynchonellata · Stenoscismatidae
Basidechenella pulchra
Trilobita · Proetidae
Protoleptostrophia
Strophomenata · Leptostrophiidae
Floweria anomala
Strophomenata · Areostrophiidae
Leptalosia
Strophomenata · Strophalosiidae
Pentamerella
Rhynchonellata · Clorindidae
Strophomena (Strophodonta)
Strophomenata · Strophodontidae
Records and references
Data: Paleobiology Database collection 85062 (CC BY 4.0) — view the source record
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Questions about Abandoned quarry of the Thunder Bay Quarries Company, eastern edge of Alpena
Can you collect at Abandoned quarry of the Thunder Bay Quarries Company, eastern edge of Alpena?
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 Abandoned quarry of the Thunder Bay Quarries Company, eastern edge of Alpena?
Fossil.
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Source: Paleobiology Database.