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CAS Loc. 578. Alum Bluff, Apalachicola River left bank, 3.5 miles N. of Bristow

Calhoun County, Florida
Directions
Next site in FloridaBrighton facies, Slough Ditch, about five miles east of Brighton · 27 mi

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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 mineral

Recorded here: fossil.

27 miBrighton facies, Slough Ditch, about five miles east of BrightonFossil33 miBlue SpringsFossil37 miMerritt IslandFossil

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About CAS Loc. 578. Alum Bluff, Apalachicola River left bank, 3.5 miles N. of Bristow

CAS Loc. 578. Alum Bluff, Apalachicola River left bank, 3.5 miles N. of Bristow is a fossil collection site in Calhoun, Florida, cataloged in the Paleobiology Database. Fossils here come from the Chipola Formation, dated to the Burdigalian (20.45–15.98 million years ago). The depositional environment is recorded as marine indet. Documented finds include Cypraeorbis willcoxi, Loxacypraea apalachicolae, Floradusta alumensis.

Geologic setting

Formation
Chipola
Geologic interval
Burdigalian
Age
20.45–15.98 Ma
Depositional environment
marine indet.
Recorded occurrences
3
Locality notes

marl bed about twenty feet above the water level

Fossils found here

Cypraeorbis willcoxi
Gastropoda · Cypraeidae
Loxacypraea apalachicolae
Gastropoda · Cypraeidae
Floradusta alumensis
NO_CLASS_SPECIFIED · NO_FAMILY_SPECIFIED

Records and references

Data: Paleobiology Database collection 179631 (CC BY 4.0) — view the source record

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Questions about CAS Loc. 578. Alum Bluff, Apalachicola River left bank, 3.5 miles N. of Bristow

Can you collect at CAS Loc. 578. Alum Bluff, Apalachicola River left bank, 3.5 miles N. of Bristow?

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 CAS Loc. 578. Alum Bluff, Apalachicola River left bank, 3.5 miles N. of Bristow?

Fossil.

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Source: Paleobiology Database.