Emerald Hollow Mine: Emerald & Aquamarine Rockhounding in Alexander County, North Carolina

Plan your visit

Generally open to casual rockhounding

County

Alexander County

State

North Carolina

Nearest road

Emerald Hollow Mine Drive

Postcode

28636

Coordinates

35.91373, -81.08290

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.

Best time to visit Emerald Hollow Mine

Comfortable months (45 to 90°F highs)

Conditions here are workable year-round, with typical highs from 50°F in winter to 88°F in summer.

Climate normals: NOAA 1991-2020 monthlies, TAYLORSVILLE station (5 mi away), adjusted for elevation.

Geology at Emerald Hollow Mine

This spot sits on Biotite Gneiss and Schist, mapped as biotite gneiss, mica schist, and calc silicate rock that formed roughly 1000 to 485 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 and Schist

Age

1000–485 Ma (Neoproterozoic to Cambrian)

Rock types

biotite gneiss, mica schist, and calc silicate rock

Elevation

1,000 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.

State guidance last verified: April 1, 2026

• North Carolina Geological Survey
• Nantahala/Pisgah National Forests
• Emerald Hollow Mine (fee-dig operator)
• Community submissions reviewed against published agency rules