Spokane Bar Sapphire Mine — Rockhounding in Lewis and Clark County, Montana

Quick details

Access

Public area

County

Lewis and Clark County

State

Montana

Nearest road

Castles Road

Coordinates

46.66457, -111.81112

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: April 1, 2026

• BLM Montana — Recreational mineral collecting
• Montana Bureau of Mines and Geology
• Gem Mountain Sapphire Mine (fee-dig operator)
• Community submissions reviewed against published agency rules

Found at Spokane Bar Sapphire Mine

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

• GoldEncyclopedia →
• SapphireEncyclopedia →