Grand Marais Beach
Approximate — check official site before visiting
Popular Lake Superior beach in the eastern UP known for agates and Yooperlites. Grand Marais is a prime spot after storms when fresh material washes up. Hunt both the beach and the harbor area for agates, jasper, and fluorescent sodalite. WARNING: Collecting is prohibited in adjacent Pictured Rocks National Lakeshore — stay outside park boundaries.
🌐 Visit Official Site →🪨 What You Can Find Here
Agates
Banded chalcedony prized for their colors and patterns. Lake Superior agates, Fairburn agates, and Montana moss agates are especially famous.
Also found at:
Fluorescent Minerals
Minerals that glow under UV light. New Jersey's Franklin-Ogdensburg area is world-famous for fluorescent specimens.
Also found at:
📍 Nearby Locations in Michigan
Petoskey Stone Beaches
Petoskey, Michigan · Public Beach
Lake Michigan beaches from Petoskey to Charlevoix for Petoskey stones — fossilized coral with distinctive hexagonal pattern (Michigan's state stone).
Whitefish Point Agates
Paradise, Michigan · Public Land
Lake Superior beach at Whitefish Point known for agates and other gemstones. Part of the Lake Superior agate region.
Keweenaw Peninsula Copper
Houghton, Michigan · Public Land
Native copper deposits and agate beds on the Keweenaw Peninsula. Hunt for pure copper nuggets and chlorastrolite (Isle Royale greenstone).
Yooperlite Beaches
Munising, Michigan · Public Beach
Hunt for Yooperlites — fluorescent sodalite pebbles that glow bright orange under UV light. Found on Lake Superior beaches. Best at night with a UV fl...
Isle Royale Greenstone Beaches
Isle Royale, Michigan · National Park
Hunt for chlorastrolite (Isle Royale greenstone) — Michigan's state gem. Found on Isle Royale beaches. Limited collecting permitted in National Park.
McLain State Park
Hancock, Michigan · State Park
Lake Superior beach within McLain State Park on the Keweenaw Peninsula. Known for Keweenaw agates, Yooperlites, rhyolite, prehnite, and occasional cop...
⛏️ Recommended Gear
Make the most of your visit to Grand Marais Beach with the right equipment.
Rock Hammer
The most essential rockhounding tool. Choose a hammer with both a flat striking face and a pointed pick end.
Typical: $25-45
Safety Glasses
Mandatory protective gear. Rock chips fly unpredictably when hammering.
Typical: $10-20
Chisel Set
Cold chisels in 3-4 sizes for precise extraction from matrix rock.
Typical: $15-30
Geologist's Pick
A heavier crack hammer for splitting hard rock. Essential for hard rock mining areas.
Typical: $35-60
Sifting Screen
Stackable mesh screens for sifting gravel and dirt. Essential for gem and fossil hunting.
Typical: $20-40
UV Flashlight
Long-wave UV light for finding fluorescent minerals and Yooperlites.
Typical: $15-35