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Emerald Creek: Almandine Garnet Rockhounding in Shoshone County, Idaho

Updated June 2026

Emerald Creek is Idaho's signature public star-garnet locality, with the Forest Service noting that commercial quantities of star garnet are otherwise known only from India. The managed sluice area gives collectors a rare legal way to search for dodecahedral almandine garnets while keeping digging out of the streambed. Reported finds include almandine garnet. Below: coordinates, access notes, nearby spots, and trip-planning links.

Emerald Creek photos

Public image records connected to this spot or its reported material.

2 photos

Map showing Emerald Creek in Shoshone County, Idaho

Quick details

Access
Public area
State
Idaho
Nearest road
National Forest Development Road 447

Geology at Emerald Creek

This spot sits on Wanapum Basalt, Priest Rapids Member, mapped as basalt that formed roughly 23 to 5 million years ago. Volcanic ground like this weathers into rocky slopes and float, and fresh exposures in cuts and drainages are usually the most productive places to look.

Mapped unit
Wanapum Basalt, Priest Rapids Member
Age
23–5 Ma (Miocene)
Rock types
basalt
Elevation
2,770 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.

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.

State guidance last verified:

Found at Emerald Creek

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 Emerald Creek.

Across the state line from Emerald Creek

Emerald Creek is close enough to the Idaho border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Emerald Creek FAQ

Where is Emerald Creek?+
Emerald Creek is in Shoshone County, Idaho, at 47.06509, -116.32654. Nearest road: National Forest Development Road 447.
What rocks and minerals can you find at Emerald Creek?+
Emerald Creek is reported to produce Almandine Garnet.
Is collecting allowed at Emerald Creek?+
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 Emerald Creek?+
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.
How do I get to Emerald Creek?+
Open the directions link to navigate to 47.06509, -116.32654 in Google Maps. The nearest road is National Forest Development Road 447.

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