Rope Mine: Gold Prospecting in Marquette County, Michigan

Updated June 2026

Rope Mine is a mapped rockhounding spot in Marquette County, Michigan. Reported finds include gold, pyrite, chalcopyrite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Marquette County
State: Michigan
Nearest road: County Road GN
Coordinates: 46.52972, -87.71583

Geology at Rope Mine

This spot sits on Metabasalt, mapped as metabasalt and schist that formed roughly 2800 to 2500 million years ago. Gold in volcanic terrain like this is usually tied to old vein systems and the gravels that drain them, so nearby washes tend to carry the color.

Mapped unit: Metabasalt
Age: 2800–2500 Ma (Neoarchean)
Rock types: metabasalt and schist
Elevation: 1,460 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 Rope Mine

Best months: April to October. Typical highs run 77°F in midsummer and 22°F in midwinter, with winter lows near 6°F.

Climate normals: NOAA 1991-2020 monthlies, ISHPEMING WWTP station (3 mi away).

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 Rope 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 Rope Mine.

Across the state line from Rope Mine

Rope 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.

Rope Mine FAQ

Where is Rope Mine?+

Rope Mine is in Marquette County, Michigan, at 46.52972, -87.71583. Nearest road: County Road GN.

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

Rope Mine is reported to produce Gold, Pyrite, Chalcopyrite.

Is collecting allowed at Rope Mine?+

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 Rope Mine?+

A gold pan, a classifier screen, a small shovel, and a snuffer bottle cover the basics. Motorized equipment and sluices fall under separate rules in most states, so start with hand tools.

When is the best time to visit Rope Mine?+

The most comfortable months at Rope Mine are April to October.

How do I get to Rope Mine?+

Open the directions link to navigate to 46.52972, -87.71583 in Google Maps. The nearest road is County Road GN.

More rockhounding in Michigan

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Open Rope Mine on the map

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