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Chappaquiddick Island

Massachusetts
Directions
Next site in MassachusettsWeyquosque Cliffs (eastern marl bed) · 14 mi

Can I collect here?

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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.

Nearby sites

All of Massachusetts
14 miWeyquosque Cliffs (eastern marl bed)Fossil15 miLignitic Clay Megaspore SiteFossil18 miGay Head cliffs, Marthas VineyardFossil

More fossil sites in Massachusetts

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More sites in Massachusetts

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About Chappaquiddick Island

Chappaquiddick Island is a fossil collection site in Massachusetts, cataloged in the Paleobiology Database. The depositional environment is recorded as coastal indet. Documented finds include Brachidontes vineyardensis, Modiolus hollicki, Cuneocorbula whitfieldi, Anomia simplexiformis, Anomia paucistriata, Glycymeris wrigleyi.

Geologic setting

Geologic interval
Eocene
Age
56–33.9 Ma
Depositional environment
coastal indet.
Recorded occurrences
15
Geology notes

ENVIRONMENT: Shallow marine siliciclastic setting.

Locality notes

SPECIFIC LOCATION: Chappaquiddick Island, adjacent to Marthas Vineyard, Massachusetts. LAT/LONG: estimated based on Chappaquiddick Island, Massachusetts.

Fossils found here

Brachidontes vineyardensis
Bivalvia · Mytilidae
Modiolus hollicki
Bivalvia · Mytilidae
Cuneocorbula whitfieldi
Bivalvia · Corbulidae
Anomia simplexiformis
Bivalvia · Anomiidae
Anomia paucistriata
Bivalvia · Anomiidae
Glycymeris wrigleyi
Bivalvia · Glycymerididae
Nucula
Bivalvia · Nuculidae
Turritella
Gastropoda · Turritellidae
Terebra
Gastropoda · Terebridae
Terebra juvenicostata
Gastropoda · Terebridae
Odostomia semicostata
Gastropoda · Pyramidellidae
Odostomia crenulata
Gastropoda · Pyramidellidae
Ostrea
Bivalvia · Ostreidae
Cardium
Bivalvia · Cardiidae
Gastropoda
Gastropoda

Records and references

Data: Paleobiology Database collection 80299 (CC BY 4.0) — view the source record

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Questions about Chappaquiddick Island

Can you collect at Chappaquiddick Island?

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 Chappaquiddick Island?

Fossil.

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What to bring

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Meteorite nearbyA 14.3 kg stony meteorite was found at Barnstable in 2018, 23 miles from here.

Source: Paleobiology Database.