Where to Find Agates near Lewistown, MT
17 of the mapped rockhounding spots within 150 miles of Lewistown report agate. The closest is Yellowstone River - Pelican Fishing Access, about 92 miles out (1 hr 54 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.
Every agate spot within 150 miles of Lewistown
Yellowstone River - Pelican Fishing AccessSweet Grass County, Montana · 92 mi awayPublic access · Montana Moss Agate, Petrified Wood, Jasper +1- Yellowstone River - Bratten Fishing AccessSweet Grass County, Montana · 93 mi awayPublic access · Montana Moss Agate, Petrified Wood, Jasper +1
Best spotYellowstone River (Billings area)Yellowstone County, Montana · 96 mi awayPublic access · Montana Agate, Chalcedony, Chert +1- Yellowstone River - Holmgren Fishing AccessStillwater County, Montana · 97 mi awayPublic access · Montana Moss Agate, Petrified Wood, Jasper +1
- Yellowstone River - Bundy Bridge Fishing AccessYellowstone County, Montana · 100 mi awayPublic access · Montana Moss Agate, Petrified Wood, Jasper +1
- Yellowstone River - Blue Creek AccessYellowstone County, Montana · 101 mi awayPublic access · Montana Moss Agate, Petrified Wood, Jasper +1
- Yellowstone River - Laurel Sportsman AccessYellowstone County, Montana · 104 mi awayPublic access · Montana Moss Agate, Petrified Wood, Jasper +1
- Yellowstone RiverPark County, Montana · 113 mi awayPublic access · Agate, Montana Agate, Moss Agate +2
- Yellowstone River - Myers Bridge AccessTreasure County, Montana · 114 mi awayPublic access · Montana Moss Agate, Petrified Wood, Jasper +1
- HyshamTreasure County, Montana · 123 mi awayPublic access · Moss Agate
- Mount BlackmoreGallatin County, Montana · 135 mi awayPublic access · Agate, Chalcedony, Hyalite Opal +1
Best spotPryor MountainsBig Horn County, Montana · 138 mi awayPermission required · Fossil, Agate, Chalcedony +2
Big Horn CanyonBig Horn County, Montana · 140 mi awayPermission required · Agate, Chalcedony, Jasper +2- Bear CanyonCarbon County, Montana · 144 mi awayPublic access · Geode, Agate
- CarbellaPark County, Montana · 146 mi awayPublic access · Agate, Jasper, Petrified Wood +1
- MinerPark County, Montana · 148 mi awayPublic access · Agate, Chalcedony, Jasper +1
- Yellowstone River - Rosebud AccessRosebud County, Montana · 150 mi awayPublic access · Montana Moss Agate, Petrified Wood, Jasper +1
Types of agates reported near Lewistown
Counts reflect how many spots in this radius mention each variety.
- Montana Moss Agate8
- Agate7
- Montana Agate2
- Moss Agate2
Agates near Lewistown FAQ
Where can I find agates near Lewistown?+
17 mapped spots within about 150 miles of Lewistown report agate. The closest is Yellowstone River - Pelican Fishing Access in Sweet Grass County, roughly 92 miles away (1 hr 54 min drive). The full list with coordinates is on this page.
Can I collect agates on public land near Lewistown?+
15 of the 17 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 Lewistown do I need to drive?+
The nearest agate spot is about 92 miles out, and the farthest on this list is 150 miles. Most fall inside a normal weekend day-trip radius.
Keep exploring from Lewistown
Where to Find Agates near other cities
Hunt agates around Lewistown 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.
