Caledonia Mine: Native Copper & Datolite Rockhounding in Ontonagon County, Michigan

Updated August 2026

Caledonia Mine is a mapped rockhounding spot in Ontonagon County, Michigan. Reported finds include native copper, datolite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Paid / fee dig
County: Ontonagon County
State: Michigan
Nearest road: Caledonia Road
Postcode: 49929
Coordinates: 46.75100, -89.12055

Land & collecting status

Pay-to-dig site

This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out.

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 Caledonia Mine

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 Caledonia Mine.

Across the state line from Caledonia Mine

Caledonia Mine 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.

Caledonia Mine FAQ

Where is Caledonia Mine?+

Caledonia Mine is in Ontonagon County, Michigan, at 46.75100, -89.12055. Nearest road: Caledonia Road.

What rocks and minerals can you find at Caledonia Mine?+

Caledonia Mine is reported to produce Native Copper, Datolite.

Is collecting allowed at Caledonia Mine?+

Pay-to-dig site. This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Caledonia Mine?+

A rock hammer, sturdy gloves, safety glasses, and a collecting bag cover the basics here. Add a spray bottle: wet rock shows color and pattern that dry rock hides.

How do I get to Caledonia Mine?+

Open the directions link to navigate to 46.75100, -89.12055 in Google Maps. The nearest road is Caledonia Road.

More rockhounding in Michigan

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Open Caledonia Mine on the map

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