Jack Creek — Rockhounding in Jefferson County, Montana
Jack Creek is a mapped rockhounding spot in Jefferson County, Montana. Reported finds include dumortierite. Below: coordinates, access notes, nearby spots, and trip-planning links.
Map showing Jack Creek in Jefferson County, Montana
Quick details
- Access
- Public area
- County
- Jefferson County
- State
- Montana
- Nearest road
- Jack Creek Road
- Coordinates
- 46.37254, -112.28725
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:
- 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 Jack Creek
Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.
- DumortieriteEncyclopedia →
Nearby rockhounding spots
Other rockhounding spots within driving distance of Jack Creek.
- BasinJefferson County, Montana · 6 mi awaySilver, Gold
- CorbinJefferson County, Montana · 10 mi awayArsenopyrite, Cerussite
- Wickes & ClancyJefferson County, Montana · 10 mi awayArsenopyrite, Cerussite, Gold
- Elkhorn MountainJefferson County, Montana · 18 mi awayMagnetite, Hematite
- HelenaLewis and Clark County, Montana · 21 mi awayGold
- Dry Cottonwood CreekTop pick in MontanaDeer Lodge County, Montana · 22 mi awaySapphire
- ButteTop pick in MontanaSilver Bow County, Montana · 27 mi awayBornite, Pisanite, Rhodochrosite
- WinstonBroadwater County, Montana · 28 mi awayLead, Silver, Zinc
Jack Creek FAQ
Where is Jack Creek?+
What rocks and minerals can you find at Jack Creek?+
Is collecting allowed at Jack Creek?+
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More rockhounding in Montana
See all 87 Montana spots →Open Jack Creek on the map
Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.
