Agates near Helena, MT
6 of the mapped rockhounding spots within 150 miles of Helena report agate. The closest is Jefferson River, about 63 miles out (1 hr 19 min drive).
Agates are banded chalcedony nodules that survive long after their volcanic host rock rots away, which is why they concentrate in gravel bars, beaches, and glacial deposits far from where they formed.
Map of 6 agate collecting spots within 150 miles of Helena, Montana
Closest agates spots to Helena
- Jefferson RiverMadison County, Montana63 mi · 1 hr 19 min driveAgate, Chalcedony, Jasper
- Mount BlackmoreGallatin County, Montana93 mi · 1 hr 57 min driveAgate, Chalcedony, Hyalite Opal
- Yellowstone RiverPark County, Montana97 mi · 2 hr 1 min driveAgate, Montana Agate, Moss Agate
- CarbellaPark County, Montana109 mi · 2 hr 16 min driveAgate, Jasper, Petrified Wood
- MinerPark County, Montana110 mi · 2 hr 18 min driveAgate, Chalcedony, Jasper
- Bakers HoleGallatin County, Montana138 mi · 2 hr 52 min driveAgate
Types of agates reported near Helena
Counts reflect how many spots in this radius mention each variety.
- Agate6
- Montana Agate1
- Moss Agate1
Every agate spot within 150 miles of Helena
Sorted by distance from Helena. Tap a row for directions, access status, and nearby trips.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Jefferson RiverPrimrose Lane | Madison County | 45.6902, -112.2745 | Public | |
| Mount BlackmoreBlackmore Trail | Gallatin County |
| 45.4447, -111.0035 | Public |
| Yellowstone RiverMyers Lane | Park County |
| 45.6285, -110.5678 | Public |
| CarbellaRock Creek Road South | Park County | 45.2175, -110.9273 | Public | |
| MinerTom Miner Creek Road | Park County | 45.1918, -110.9271 | Public | |
| Bakers HoleConservation Lane | Gallatin County | 44.7108, -111.0956 | Public |
Agates near Helena FAQ
Where can I find agates near Helena?+
6 mapped spots within about 150 miles of Helena report agate. The closest is Jefferson River in Madison County County, roughly 63 miles away (1 hr 19 min drive). The full list with coordinates is on this page.
Can I collect agates on public land near Helena?+
6 of the 6 spots here sit on land mapped as publicly accessible. Casual hand collecting of common rocks and minerals is allowed on most BLM and Forest Service land with limits set by the local field office; national parks and most state parks are closed to collecting. Confirm current rules with the managing agency before a trip.
What is the fastest way to spot an agate in a gravel bed?+
Look for waxy luster and translucence rather than color. Wet the stone or look right after rain: agate glows softly at thin edges when backlit, while jasper and chert stay opaque. Banding clinches it but is often hidden until the stone is cracked or tumbled.
How far from Helena do I need to drive?+
The nearest agate spot is about 63 miles out, and the farthest on this list is 138 miles. Most fall inside a normal weekend day-trip radius.
Keep exploring from Helena
Agates near other cities
Hunt agates around Helena with the map in your pocket
RockHoundR shows these spots on an offline map with public land overlays, geology layers, weather, and a log for your finds.
