Two Hearted River State Forest Campground: Unakite & Epidote Rockhounding in Luce County, Michigan

Updated August 2026

Two Hearted River State Forest Campground is a mapped rockhounding spot in Luce County, Michigan. Reported finds include unakite, epidote, chert, gneiss, granite, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Paid / fee dig
County: Luce County
State: Michigan
Postcode: 49868
Coordinates: 46.69807, -85.42263

Geology at Two Hearted River State Forest Campground

This spot sits on Jacobsville Sandstone, mapped as sandstone that formed roughly 1600 to 1000 million years ago. Tough silica like agate, jasper, and chert typically weathers out of beds like these and collects as float in drainages and on deflation surfaces.

Mapped unit: Jacobsville Sandstone
Age: 1600–1000 Ma (Mesoproterozoic)
Rock types: sandstone
Elevation: 620 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Two Hearted River State Forest Campground

Best months: April to October. Typical highs run 77°F in midsummer and 23°F in midwinter, with winter lows near 8°F.

Climate normals: NOAA 1991-2020 monthlies, TAHQUAMENON FALLS SP station (12 mi away).

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 Two Hearted River State Forest Campground

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 Two Hearted River State Forest Campground.

Two Hearted River State Forest Campground FAQ

Where is Two Hearted River State Forest Campground?+

Two Hearted River State Forest Campground is in Luce County, Michigan, at 46.69807, -85.42263.

What rocks and minerals can you find at Two Hearted River State Forest Campground?+

Two Hearted River State Forest Campground is reported to produce Unakite, Epidote, Chert, Gneiss, Granite, Jacobsville Sandstone, Quartz, Chalcedony, Rhyolite, Yooperlite, Amygdaloidal Basalt, Omar, Hematite, Mary Ellen Jasper, Jasper, Jaspillite, Banded Iron Formation, Lake Superior Agate, Kona Dolomite.

Is collecting allowed at Two Hearted River State Forest Campground?+

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 Two Hearted River State Forest Campground?+

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 Two Hearted River State Forest Campground?+

The most comfortable months at Two Hearted River State Forest Campground are April to October.

How do I get to Two Hearted River State Forest Campground?+

Open the directions link to navigate to 46.69807, -85.42263 in Google Maps. Some spots are remote, so check road conditions before driving out.

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Open Two Hearted River State Forest Campground on the map

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