Crisp Point Lighthouse: Granite & Quartz Rockhounding in Luce County, Michigan

Updated August 2026

Crisp Point Lighthouse is a mapped rockhounding spot in Luce County, Michigan. Reported finds include granite, quartz, chert, omar, gneiss, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Luce County
State: Michigan
Postcode: 49868
Coordinates: 46.75292, -85.25736

Geology at Crisp Point Lighthouse

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: 600 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 Crisp Point Lighthouse

Best months: April to October. Typical highs run 77°F in midsummer and 24°F in midwinter, with winter lows near 8°F.

Climate normals: NOAA 1991-2020 monthlies, TAHQUAMENON FALLS SP station (11 mi away), adjusted for elevation.

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

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 Crisp Point Lighthouse

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 Crisp Point Lighthouse.

Crisp Point Lighthouse FAQ

Where is Crisp Point Lighthouse?+

Crisp Point Lighthouse is in Luce County, Michigan, at 46.75292, -85.25736.

What rocks and minerals can you find at Crisp Point Lighthouse?+

Crisp Point Lighthouse is reported to produce Granite, Quartz, Chert, Omar, Gneiss, Jasper, Unakite, Rhyolite, Lake Superior Agate, Yooperlite, Hematite, Mary Ellen Jasper.

Is collecting allowed at Crisp Point Lighthouse?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Crisp Point Lighthouse?+

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 Crisp Point Lighthouse?+

The most comfortable months at Crisp Point Lighthouse are April to October.

How do I get to Crisp Point Lighthouse?+

Open the directions link to navigate to 46.75292, -85.25736 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in Michigan

See all 107 Michigan spots →

Open Crisp Point Lighthouse on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.