Flor-a-Mar: Agatized Coral & Chalcedony Rockhounding in Pasco County, Florida

Quick details

Access

Public area

County

Pasco County

State

Florida

Nearest road

Topsail Trail

Postcode

34652

Coordinates

28.23379, -82.74787

Geology at Flor-a-Mar

This spot sits on Suwannee Limestone, mapped as limestone and dolostone that formed roughly 34 to 23 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

Suwannee Limestone

Age

34–23 Ma (Oligocene)

Rock types

limestone and dolostone

Elevation

10 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 Flor-a-Mar

Best months: September to June. Typical highs run 91°F in midsummer and 69°F in midwinter, with winter lows near 51°F.

Climate normals: NOAA 1991-2020 monthlies, TARPON SPGS SEWAGE PLT station (6 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 Flor-a-Mar

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

• Agatized CoralEncyclopedia →
• ChalcedonyEncyclopedia →