Rockhounding in Barnstable County, Massachusetts

1 mapped rockhounding spot in Barnstable County. Most commonly produces jasper.

Barnstable County rockhounding photos

Representative spot and material photos from this county, shown where verified public image records are available.

1 photo

Sunset over the salt marsh at the Sandwich boardwalk leading to Town Neck Beach, Barnstable County, Massachusetts — SandwichBarnstable County, Massachusetts

Minerals reported in Barnstable County

Jasper1

Standout in Barnstable County

Hand-picked spot in Barnstable County, chosen for unusual mineralogy or documented public access. Each card opens the full coordinates and access notes.

Top pick
Sandwich
Public
Barnstable County
The Cape Cod Bay beaches at Sandwich sit at the southern end of the Massachusetts Bay jasper belt, where glacial outwash gravels deliver red and yellow jasper, often veined with green epidote.
Jasper

Spots in Barnstable County

Spot	Minerals	Coordinates	Access
SandwichPhillips Road	Jasper	41.7840, -70.5054	Public

Neighboring counties in Massachusetts

Adjacent rockhounding counties, ranked by how close their centroids sit to Barnstable County. A natural extension if Barnstable County is already on your trip plan.

Across the state line from Barnstable County

Rockhounding counties in neighboring states within driving range. Geology rarely respects state borders — these are often the closest mapped spots you can reach without going deeper into Massachusetts.

Barnstable County FAQ

Where can I rockhound in Barnstable County, Massachusetts?+

RockHoundR tracks 1 rockhounding spot in Barnstable County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in Barnstable County?+

Spots in Barnstable County most often produce Jasper. Individual spots can vary widely.

Are these Barnstable County rockhounding spots on public land?+

Most spots in this list are tagged public, but access can change with seasons, claims, and local closures. Always verify before driving out — links in the app open the right BLM, USFS, or county pages.

Plan a Barnstable County rockhounding trip

Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.