Tobin Harbor Area: Agate & Carnelian Rockhounding in Keweenaw County, Michigan

Updated June 2026

Tobin Harbor Area is a mapped rockhounding spot in Keweenaw County, Michigan. Reported finds include agate, carnelian, quartz. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Permission required
County: Keweenaw County
State: Michigan
Nearest road: Stoll Trail
Coordinates: 48.16542, -88.46346

Best time to visit Tobin Harbor Area

Best months: April to October. Typical highs run 72°F in midsummer and 26°F in midwinter, with winter lows near 15°F.

Climate normals: NOAA 1991-2020 monthlies, COPPER HARBOR station (55 mi away).

Land & collecting status

Permission required before collecting

Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified: April 1, 2026

Michigan DNR — Rockhounding rules
Michigan Geological Survey
Isle Royale National Park — Rules
Community submissions reviewed against published agency rules

Found at Tobin Harbor Area

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Tobin Harbor Area.

Across the state line from Tobin Harbor Area

Tobin Harbor Area is close enough to the Michigan border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Tobin Harbor Area FAQ

Where is Tobin Harbor Area?+

Tobin Harbor Area is in Keweenaw County, Michigan, at 48.16542, -88.46346. Nearest road: Stoll Trail.

What rocks and minerals can you find at Tobin Harbor Area?+

Tobin Harbor Area is reported to produce Agate, Carnelian, Quartz.

Is collecting allowed at Tobin Harbor Area?+

Permission required before collecting. Requires landowner or agency permission before any collecting. Do not enter without explicit authorization. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Tobin Harbor Area?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Tobin Harbor Area?+

The most comfortable months at Tobin Harbor Area are April to October.

How do I get to Tobin Harbor Area?+

Open the directions link to navigate to 48.16542, -88.46346 in Google Maps. The nearest road is Stoll Trail.

More rockhounding in Michigan

See all 107 Michigan spots →

Open Tobin Harbor Area on the map

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