Where to Find Agates near Portland (Maine), ME
10 of the mapped rockhounding spots within 150 miles of Portland (Maine) report agate. The closest is Middlesborough, about 129 miles out (2 hr 41 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 Portland (Maine)
MiddlesboroughPlymouth County, Massachusetts · 129 mi awayPublic access · Agate, Chalcedony- Cumberland HillProvidence County, Rhode Island · 132 mi awayPublic access · Agate, Chalcedony, Jasper +1
Best spotAdams BrookWindham County, Vermont · 135 mi awayPublic access · Serpentine, Quartz, Red Agate +2- ProvidenceProvidence County, Rhode Island · 141 mi awayPublic access · Agate, Chalcedony, Jasper +1
- DeerfieldFranklin County, Massachusetts · 141 mi awayPublic access · Agate
Best spotPawtuxetProvidence County, Rhode Island · 143 mi awayPublic access · Agate, Carnelian, Amethyst +1
Best spotDeerfield RiverFranklin County, Massachusetts · 144 mi awayPublic access · Jasper, Agate, Chalcedony- AmherstHampshire County, Massachusetts · 144 mi awayPublic access · Agate
- ConwayFranklin County, Massachusetts · 146 mi awayPublic access · Agate
Best spotMt. Hope BayBristol County, Rhode Island · 146 mi awayPublic access · Red Agate, Amethyst, Carnelian +3
Types of agates reported near Portland (Maine)
Counts reflect how many spots in this radius mention each variety.
- Agate8
- Green Agate2
- Red Agate2
- Orange Agate1
Agates near Portland (Maine) FAQ
Where can I find agates near Portland (Maine)?+
10 mapped spots within about 150 miles of Portland (Maine) report agate. The closest is Middlesborough in Plymouth County, roughly 129 miles away (2 hr 41 min drive). The full list with coordinates is on this page.
Can I collect agates on public land near Portland (Maine)?+
10 of the 10 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 Portland (Maine) do I need to drive?+
The nearest agate spot is about 129 miles out, and the farthest on this list is 146 miles. Most fall inside a normal weekend day-trip radius.
Keep exploring from Portland (Maine)
Where to Find Agates near other cities
Hunt agates around Portland (Maine) 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.
