Conjecture Mine — Rockhounding in Bonner County, Idaho
Conjecture Mine is a mapped rockhounding spot in Bonner County, Idaho. Reported finds include rhodochrosite. Below: coordinates, access notes, nearby spots, and trip-planning links.
Map showing Conjecture Mine in Bonner County, Idaho
Quick details
- Access
- Public area
- County
- Bonner County
- State
- Idaho
- Postcode
- 83803
- Coordinates
- 47.91542, -116.43117
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:
- Idaho Panhandle National Forests — Emerald Creek
- Idaho Geological Survey
- Spencer Opal Mines (fee-dig operator)
- Community submissions reviewed against published agency rules
Found at Conjecture Mine
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 Conjecture Mine.
- BayviewBonner County, Idaho · 2 mi awayGalena
- Hayden LakeKootenai County, Idaho · 12 mi awayLead, Silver
- Goat Mountain & Blackdome PeakBonner County, Idaho · 25 mi awayKyanite
- KingstonShoshone County, Idaho · 26 mi awayArsenopyrite, Gold, Pyrite
- PrichardShoshone County, Idaho · 28 mi awayGold
- Deadwood GulchShoshone County, Idaho · 29 mi awayGarnet, Gold
- Shoshone CountyShoshone County, Idaho · 33 mi awayGold, Lead, Silver
- BurkeShoshone County, Idaho · 39 mi awayQuartz
Across the state line from Conjecture Mine
Conjecture Mine 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.
- NewportPend Oreille County, Washington · 35 mi awayAmethyst
- Daybreak MineSpokane County, Washington · 36 mi awayAutunite
- ChattaroySpokane County, Washington · 43 mi awayGarnet, Quartz
- Sacheen LakePend Oreille County, Washington · 45 mi awayGarnet
- LibbyLincoln County, Montana · 47 mi awayAegirine, Asbestos, Vermiculite
- Silver HillSpokane County, Washington · 48 mi awayCassiterite
Conjecture Mine FAQ
Where is Conjecture Mine?+
What rocks and minerals can you find at Conjecture Mine?+
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More rockhounding in Idaho
See all 114 Idaho spots →Open Conjecture Mine on the map
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