Gumlog Mountain: Corundum & Kyanite Rockhounding in Union County, Georgia

Updated June 2026

Gumlog Mountain is a mapped rockhounding spot in Union County, Georgia. Reported finds include corundum, kyanite, tourmaline. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Union County
State: Georgia
Nearest road: Ravencliff Faa Road
Postcode: 30582
Coordinates: 34.94046, -83.92632

Geology at Gumlog Mountain

This spot sits on Biotite Gneiss, mapped as biotite 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: Biotite Gneiss
Age: 4600–250 Ma (Precambrian to Paleozoic)
Rock types: biotite gneiss
Elevation: 3,460 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 Gumlog Mountain

Best months: February to December. Typical highs run 79°F in midsummer and 44°F in midwinter, with winter lows near 20°F.

Climate normals: NOAA 1991-2020 monthlies, BLAIRSVILLE EXP STN station (6 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 Gumlog Mountain

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 Gumlog Mountain.

Across the state line from Gumlog Mountain

Gumlog Mountain 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.

Gumlog Mountain FAQ

Where is Gumlog Mountain?+

Gumlog Mountain is in Union County, Georgia, at 34.94046, -83.92632. Nearest road: Ravencliff Faa Road.

What rocks and minerals can you find at Gumlog Mountain?+

Gumlog Mountain is reported to produce Corundum, Kyanite, Tourmaline.

Is collecting allowed at Gumlog Mountain?+

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 Gumlog Mountain?+

A rock hammer, a pry bar, gloves, and safety glasses suit pegmatite ground. Work weathered zones and check dump piles; coarse crystals often sit in decomposed rock.

When is the best time to visit Gumlog Mountain?+

The most comfortable months at Gumlog Mountain are February to December.

How do I get to Gumlog Mountain?+

Open the directions link to navigate to 34.94046, -83.92632 in Google Maps. The nearest road is Ravencliff Faa Road.

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Open Gumlog Mountain on the map

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