Cannon County: Geode Digging in Cannon County, Tennessee

Updated June 2026

Cannon County is a mapped rockhounding spot in Cannon County, Tennessee. Reported finds include calcite, fluorite, geode, goethite, limonite, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Cannon County
State: Tennessee
Nearest road: Gassaway Road
Postcode: 37190
Coordinates: 35.82977, -86.05901

Geology at Cannon County

This spot sits on Stones River Group; Carters Limestone, mapped as limestone that formed roughly 485 to 445 million years ago. Limestone country like this is classic geode ground: cavities in the carbonate rock can line themselves with quartz or calcite crystals.

Mapped unit: Stones River Group; Carters Limestone
Age: 485–445 Ma (Ordovician)
Rock types: limestone
Elevation: 710 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 Cannon County

Best months: September to June. Typical highs run 91°F in midsummer and 51°F in midwinter, with winter lows near 28°F.

Climate normals: NOAA 1991-2020 monthlies, WOODBURY 1 WNW station (4 mi away), adjusted for elevation.

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 Cannon County

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 Cannon County.

Across the state line from Cannon County

Cannon County is close enough to the Tennessee border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Cannon County FAQ

Where is Cannon County?+

Cannon County is in Cannon County, Tennessee, at 35.82977, -86.05901. Nearest road: Gassaway Road.

What rocks and minerals can you find at Cannon County?+

Cannon County is reported to produce Calcite, Fluorite, Geode, Goethite, Limonite, Pyrite, Celestite.

Is collecting allowed at Cannon County?+

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 Cannon County?+

Bring a crack hammer, a chisel, safety glasses, and a bucket. Candidates are rounder and lighter than solid rock; a soil pipe cutter opens them cleaner than a flat smash.

When is the best time to visit Cannon County?+

The most comfortable months at Cannon County are September to June.

How do I get to Cannon County?+

Open the directions link to navigate to 35.82977, -86.05901 in Google Maps. The nearest road is Gassaway Road.

More rockhounding in Tennessee

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Open Cannon County on the map

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