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.
Map of 17 agate collecting spots within 150 miles of Lewistown, Montana
Closest agates spots to Lewistown
- Yellowstone River - Pelican Fishing AccessSweet Grass County, Montana92 mi · 1 hr 54 min driveMontana Moss Agate, Petrified Wood, Jasper
- Yellowstone River - Bratten Fishing AccessSweet Grass County, Montana93 mi · 1 hr 57 min driveMontana Moss Agate, Petrified Wood, Jasper
- Yellowstone River (Billings area)Yellowstone County, Montana96 mi · 2 hr driveMontana Agate, Chalcedony, Chert
- Yellowstone River - Holmgren Fishing AccessStillwater County, Montana97 mi · 2 hr 1 min driveMontana Moss Agate, Petrified Wood, Jasper
- Yellowstone River - Bundy Bridge Fishing AccessYellowstone County, Montana100 mi · 2 hr 5 min driveMontana Moss Agate, Petrified Wood, Jasper
- Yellowstone River - Blue Creek AccessYellowstone County, Montana101 mi · 2 hr 7 min driveMontana Moss Agate, Petrified Wood, Jasper
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
Every agate spot within 150 miles of Lewistown
Sorted by distance from Lewistown. Tap a row for directions, access status, and nearby trips.
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
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.
