Trap Rock Gap: Corundum & Ruby Rockhounding in Union County, Georgia

Updated June 2026

Trap Rock Gap is a mapped rockhounding spot in Union County, Georgia. Reported finds include corundum, ruby. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Union County
State: Georgia
Nearest road: Trackrock Gap Road
Coordinates: 34.87870, -83.87793

Geology at Trap Rock Gap

This spot sits on Amphibolite/ Ultramafic, mapped as amphibolite and serpentinite that formed roughly 4600 to 250 million years ago. Metamorphic rock like this is where garnet, staurolite, and kyanite typically grow as the rock recrystallizes under heat and pressure.

Mapped unit: Amphibolite/ Ultramafic
Age: 4600–250 Ma (Precambrian to Paleozoic)
Rock types: amphibolite and serpentinite
Elevation: 2,160 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 Trap Rock Gap

Conditions here are workable year-round, with typical highs from 49°F in winter to 84°F in summer.

Climate normals: NOAA 1991-2020 monthlies, BLAIRSVILLE EXP STN 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 Trap Rock Gap

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 Trap Rock Gap.

Across the state line from Trap Rock Gap

Trap Rock Gap is close enough to the Georgia border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Trap Rock Gap FAQ

Where is Trap Rock Gap?+

Trap Rock Gap is in Union County, Georgia, at 34.87870, -83.87793. Nearest road: Trackrock Gap Road.

What rocks and minerals can you find at Trap Rock Gap?+

Trap Rock Gap is reported to produce Corundum, Ruby.

Is collecting allowed at Trap Rock Gap?+

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 Trap Rock Gap?+

A rock hammer, a sieve, and a small shovel work well for garnet-type minerals, which concentrate as resistant grains in soils and creek gravels.

When is the best time to visit Trap Rock Gap?+

Trap Rock Gap is workable year-round.

How do I get to Trap Rock Gap?+

Open the directions link to navigate to 34.87870, -83.87793 in Google Maps. The nearest road is Trackrock Gap Road.

More rockhounding in Georgia

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Open Trap Rock Gap on the map

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