Milner: Mica Books & Smoky Quartz Rockhounding in Lamar County, Georgia

Quick details

Access

Public area

County

Lamar County

State

Georgia

Nearest road

Zebulon Road

Postcode

30257

Coordinates

33.10908, -84.20477

Geology at Milner

This spot sits on Biotite Gneiss/ Feldspathic Biotite Gneiss, mapped as gneiss that formed roughly 4600 to 250 million years ago. Metamorphic terrain like this typically carries quartz veins and sweats, and weathered crystals tend to end up in the soils and streams below.

Mapped unit

Biotite Gneiss/ Feldspathic Biotite Gneiss

Age

4600–250 Ma (Precambrian to Paleozoic)

Rock types

gneiss

Elevation

830 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 Milner

Conditions here are workable year-round, with typical highs from 56°F in winter to 90°F in summer.

Climate normals: NOAA 1991-2020 monthlies, THE ROCK RCH station (10 mi away).

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 Milner

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

• Mica BooksEncyclopedia →
• Smoky QuartzEncyclopedia →