Best spot

Seven Devils Mining District — Rockhounding in Adams County, Idaho

Seven Devils is a classic Idaho skarn and copper district, where Idaho Geological Survey maps and reports emphasize limestone-garnet belts, copper deposits, and lime-silicate minerals. For collectors, that translates into a broader mineral suite than most Idaho sites: garnet, epidote, malachite, zoisite, and related contact-metamorphic material. Reported finds include epidote, red garnet, pink garnet, malachite, thulite, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Seven Devils Mining District photos

Public image records connected to this spot or its reported material, with source and license attribution.

1 photo

Map showing Seven Devils Mining District in Adams County, Idaho

Quick details

Access
Public area
State
Idaho
Nearest road
National Forest Development Road 493

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 Seven Devils Mining District

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 Seven Devils Mining District.

Across the state line from Seven Devils Mining District

Seven Devils Mining District 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.

Seven Devils Mining District FAQ

Why is Seven Devils Mining District one of the best rockhounding spots in Idaho?+
Seven Devils is a classic Idaho skarn and copper district, where Idaho Geological Survey maps and reports emphasize limestone-garnet belts, copper deposits, and lime-silicate minerals. For collectors, that translates into a broader mineral suite than most Idaho sites: garnet, epidote, malachite, zoisite, and related contact-metamorphic material.
Where is Seven Devils Mining District?+
Seven Devils Mining District is in Adams County, Idaho, at 45.16617, -116.64885. Nearest road: National Forest Development Road 493.
What rocks and minerals can you find at Seven Devils Mining District?+
Seven Devils Mining District is reported to produce Epidote, Red Garnet, Pink Garnet, Malachite, Thulite, Zoisite.
Is collecting allowed at Seven Devils Mining District?+
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.
How do I get to Seven Devils Mining District?+
Open the directions link to navigate to 45.16617, -116.64885 in Google Maps. The nearest road is National Forest Development Road 493.

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