Agates near Baltimore, MD
19 of the mapped rockhounding spots within 150 miles of Baltimore report agate. The closest is Bare Hills mining district, about 7 miles out (9 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 19 agate collecting spots within 150 miles of Baltimore, Maryland
Closest agates spots to Baltimore
- Bare Hills mining districtBaltimore County, Maryland7 mi · 9 min driveActinolite, Malachite, Epidote
- Flintville (moss agate area)Harford County, Maryland34 mi · 42 min driveMoss Agate, Jasper
- Rock Springs RunLancaster County, Pennsylvania40 mi · 50 min driveMoss Agate
- HarrisburgYork County, Pennsylvania62 mi · 1 hr 17 min driveAgate, Amethyst, Chalcedony
- Area Around Caledonia State ParkFranklin County, Pennsylvania64 mi · 1 hr 20 min driveAgate, Jasper
- Mt. Holly SpringsCumberland County, Pennsylvania66 mi · 1 hr 22 min driveAgate Nodules
Types of agates reported near Baltimore
Counts reflect how many spots in this radius mention each variety.
- Agate11
- Moss Agate4
- Banded Agate2
- Clear Agate2
- Stripped Agate2
- Agate Nodules1
Every agate spot within 150 miles of Baltimore
Sorted by distance from Baltimore. Tap a row for directions, access status, and nearby trips.
Agates near Baltimore FAQ
Where can I find agates near Baltimore?+
19 mapped spots within about 150 miles of Baltimore report agate. The closest is Bare Hills mining district in Baltimore County County, roughly 7 miles away (9 min drive). The full list with coordinates is on this page.
Can I collect agates on public land near Baltimore?+
19 of the 19 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 Baltimore do I need to drive?+
The nearest agate spot is about 7 miles out, and the farthest on this list is 146 miles. Most fall inside a normal weekend day-trip radius.
Keep exploring from Baltimore
Agates near other cities
Hunt agates around Baltimore 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.
