Cannon County: Geode Digging in Cannon County, Tennessee

Plan your visit

Generally open to casual rockhounding

County

Cannon County

State

Tennessee

Nearest road

Gassaway Road

Postcode

37190

Coordinates

35.82977, -86.05901

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

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.

Best time to visit Cannon County

Comfortable months (45 to 90°F highs)

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.

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.

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.

• Tennessee Division of Geology
• Cherokee National Forest
• Tennessee State Parks rules
• Community submissions reviewed against published agency rules