Blowing Rocks Preserve: Coquina Rockhounding in Martin County, Florida

Updated June 2026

Blowing Rocks Preserve is a mapped rockhounding spot in Martin County, Florida. Reported finds include coquina. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Martin County
State: Florida
Nearest road: South Beach Road
Postcode: 33455
Coordinates: 26.98392, -80.08736

Geology at Blowing Rocks Preserve

This spot sits on Anastasia Formation, mapped as sand and limestone that formed within roughly the last 3 million years. Loose deposits like these are float-collecting ground: erosion keeps moving durable rocks and minerals into gravel bars, cutbanks, and washes.

Mapped unit: Anastasia Formation
Age: 3 Ma to present (Pleistocene)
Rock types: sand and limestone
Elevation: 60 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 Blowing Rocks Preserve

Best months: September to June. Typical highs run 91°F in midsummer and 74°F in midwinter, with winter lows near 58°F.

Climate normals: NOAA 1991-2020 monthlies, JUNO BEACH station (9 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.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Blowing Rocks Preserve

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Coquina

Nearby rockhounding spots

Other rockhounding spots within driving distance of Blowing Rocks Preserve.

Blowing Rocks Preserve FAQ

Where is Blowing Rocks Preserve?+

Blowing Rocks Preserve is in Martin County, Florida, at 26.98392, -80.08736. Nearest road: South Beach Road.

What rocks and minerals can you find at Blowing Rocks Preserve?+

Blowing Rocks Preserve is reported to produce Coquina.

Is collecting allowed at Blowing Rocks Preserve?+

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 Blowing Rocks Preserve?+

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.

When is the best time to visit Blowing Rocks Preserve?+

The most comfortable months at Blowing Rocks Preserve are September to June.

How do I get to Blowing Rocks Preserve?+

Open the directions link to navigate to 26.98392, -80.08736 in Google Maps. The nearest road is South Beach Road.

More rockhounding in Florida

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Open Blowing Rocks Preserve on the map

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