Lithonia: Calcite & Epidote Rockhounding in DeKalb County, Georgia

Plan your visit

Generally open to casual rockhounding

County

DeKalb County

State

Georgia

Nearest road

Rogers Lake Road

Postcode

30058

Coordinates

33.72969, -84.09963

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.

Geology at Lithonia

This spot sits on Granitic Gneiss undifferentiated, mapped as gneiss that formed roughly 4600 to 250 million years ago. Metamorphic belts like this often host pegmatite dikes, the coarse-crystal bodies that typically carry beryl, tourmaline, and sheet mica.

Mapped unit

Granitic Gneiss undifferentiated

Age

4600–250 Ma (Precambrian to Paleozoic)

Rock types

gneiss

Elevation

910 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.

• Georgia Environmental Protection Division, Geologic Survey
• Chattahoochee-Oconee National Forests
• Georgia State Parks rules
• Community submissions reviewed against published agency rules