Rockhounding in Alpena County, Michigan

1 mapped rockhounding spot in Alpena County. Most commonly produces brachiopods, crinoid stems, fossilized coral, petoskey stones.

Alpena County rockhounding photos

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

1 photo

A Devonian honeycomb coral (Favosites) fossil in limestone, like the fossils at the Rockport quarry — Rockport Recreation AreaAlpena County, Michigan

Minerals reported in Alpena County

Brachiopods1
Crinoid Stems1
Fossilized Coral1
Petoskey Stones1
Pyrite1

Standout in Alpena County

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

Top pick
Rockport Recreation Area
Public
Alpena County
Rockport State Recreation Area opens a 300-acre former limestone quarry whose floor is scattered with Devonian fossils about 400 million years old, including Petoskey stones, Favosites honeycomb coral, brachiopods, and crinoids. It is one of the few Michigan state sites where the DNR openly invites visitors to keep up to 25 pounds of fossils per person each year. Pyrite also occurs in the quarry beds.
Petoskey Stones, Fossilized Coral, Brachiopods, Crinoid Stems

Spots in Alpena County

Spot	Minerals	Coordinates	Access
Rockport Recreation AreaOld Grade Road	Petoskey Stones Fossilized Coral Brachiopods Crinoid Stems Pyrite	45.2013, -83.3949	Public

Neighboring counties in Michigan

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

Alpena County FAQ

Where can I rockhound in Alpena County, Michigan?+

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

What rocks and minerals are common in Alpena County?+

Spots in Alpena County most often produce Brachiopods, Crinoid Stems, Fossilized Coral, Petoskey Stones, Pyrite. Individual spots can vary widely.

Are these Alpena 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 Alpena County rockhounding trip

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