Frankfort Public Beach And Playground: Granite & Chert Rockhounding in Benzie County, Michigan

Updated August 2026

Frankfort Public Beach And Playground is a mapped rockhounding spot in Benzie County, Michigan. Reported finds include granite, chert, quartz, chain coral, horn coral, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Check locally
County: Benzie County
State: Michigan
Postcode: 49635
Coordinates: 44.63237, -86.24583

Geology at Frankfort Public Beach And Playground

This spot sits on Traverse Group, mapped as limestone that formed roughly 395 to 385 million years ago. Limestone like this typically forms in ancient seas, so marine fossils such as brachiopods, corals, and crinoids tend to weather out of fresh exposures.

Mapped unit: Traverse Group
Age: 395–385 Ma (Middle Devonian)
Rock types: limestone
Elevation: 590 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 Frankfort Public Beach And Playground

Best months: April to November. Typical highs run 79°F in midsummer and 30°F in midwinter, with winter lows near 20°F.

Climate normals: NOAA 1991-2020 monthlies, FRANKFORT 2NE station (2 mi away), adjusted for elevation.

Land & collecting status

Confirm rules before collecting

Land status here is not confirmed. Verify with the managing agency before collecting — federal, state, and tribal rules differ.

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 Frankfort Public Beach And Playground

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 Frankfort Public Beach And Playground.

Across the state line from Frankfort Public Beach And Playground

Frankfort Public Beach And Playground 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.

Selner ParkKewaunee County, Wisconsin · 63 mi away

Frankfort Public Beach And Playground FAQ

Where is Frankfort Public Beach And Playground?+

Frankfort Public Beach And Playground is in Benzie County, Michigan, at 44.63237, -86.24583.

What rocks and minerals can you find at Frankfort Public Beach And Playground?+

Frankfort Public Beach And Playground is reported to produce Granite, Chert, Quartz, Chain Coral, Horn Coral, Frankfort Green, Petoskey Stone, Unakite.

Is collecting allowed at Frankfort Public Beach And Playground?+

Confirm rules before collecting. Land status here is not confirmed. Verify with the managing agency before collecting — federal, state, and tribal rules differ. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Frankfort Public Beach And Playground?+

A rock hammer, a cold chisel, safety glasses, and newspaper or foam for wrapping finds cover most fossil ground. A trowel and a sieve help in soft exposures.

When is the best time to visit Frankfort Public Beach And Playground?+

The most comfortable months at Frankfort Public Beach And Playground are April to November.

How do I get to Frankfort Public Beach And Playground?+

Open the directions link to navigate to 44.63237, -86.24583 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in Michigan

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Open Frankfort Public Beach And Playground on the map

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