Hogg Mine: Rockhounding in Troup County, Georgia

Quick details

Access

Paid / fee dig

County

Troup County

State

Georgia

Nearest road

Whitesville Street

Postcode

30240

Coordinates

32.93925, -85.01886

Geology at Hogg Mine

This spot sits on Mica Schist/ Gneiss/ Amphibolite, mapped as gneiss, mica schist, and amphibolite that formed roughly 4600 to 250 million years ago. Metamorphic rock like this weathers into resistant float, and minerals that survive transport typically concentrate in nearby drainages.

Mapped unit

Mica Schist/ Gneiss/ Amphibolite

Age

4600–250 Ma (Precambrian to Paleozoic)

Rock types

gneiss, mica schist, and amphibolite

Elevation

760 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 Hogg Mine

Best months: August to June. Typical highs run 91°F in midsummer and 56°F in midwinter, with winter lows near 34°F.

Climate normals: NOAA 1991-2020 monthlies, LA GRANGE 1N station (8 mi away).

Land & collecting status

Pay-to-dig site

This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out.

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.