Unnamed Area (Agatized Coral #1): Geode Digging in Hillsborough County, Florida

Updated June 2026

Unnamed Area (Agatized Coral #1) is a mapped rockhounding spot in Hillsborough County, Florida. Reported finds include agatized coral, geode. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Hillsborough County
State: Florida
Nearest road: Interbay Boulevard
Postcode: 33611
Coordinates: 27.88891, -82.48084

Geology at Unnamed Area (Agatized Coral #1)

This spot sits on Hawthorn Group, Arcadia Formation, Tampa Member, mapped as limestone that formed roughly 28 to 12 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: Hawthorn Group, Arcadia Formation, Tampa Member
Age: 28–12 Ma (Late Oligocene to Middle Miocene)
Rock types: limestone
Elevation: 20 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 Unnamed Area (Agatized Coral #1)

Best months: September to June. Typical highs run 91°F in midsummer and 71°F in midwinter, with winter lows near 53°F.

Climate normals: NOAA 1991-2020 monthlies, TAMPA INTL AP 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 Unnamed Area (Agatized Coral #1)

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 Unnamed Area (Agatized Coral #1).

Unnamed Area (Agatized Coral #1) FAQ

Where is Unnamed Area (Agatized Coral #1)?+

Unnamed Area (Agatized Coral #1) is in Hillsborough County, Florida, at 27.88891, -82.48084. Nearest road: Interbay Boulevard.

What rocks and minerals can you find at Unnamed Area (Agatized Coral #1)?+

Unnamed Area (Agatized Coral #1) is reported to produce Agatized Coral, Geode.

Is collecting allowed at Unnamed Area (Agatized Coral #1)?+

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 Unnamed Area (Agatized Coral #1)?+

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 Unnamed Area (Agatized Coral #1)?+

The most comfortable months at Unnamed Area (Agatized Coral #1) are September to June.

How do I get to Unnamed Area (Agatized Coral #1)?+

Open the directions link to navigate to 27.88891, -82.48084 in Google Maps. The nearest road is Interbay Boulevard.

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