White Marsh — Rockhounding in Baltimore County, Maryland

White Marsh is a mapped rockhounding spot in Baltimore County, Maryland. Reported finds include amethyst. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Baltimore County
State: Maryland
Nearest road: Red Trail
Postcode: 21128
Coordinates: 39.38832, -76.44688

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at White Marsh

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Amethyst Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of White Marsh.

Across the state line from White Marsh

White Marsh is close enough to the Maryland border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

White Marsh FAQ

Where is White Marsh?+

White Marsh is in Baltimore County, Maryland, at 39.38832, -76.44688. Nearest road: Red Trail.

What rocks and minerals can you find at White Marsh?+

White Marsh is reported to produce Amethyst.

Is collecting allowed at White Marsh?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

How do I get to White Marsh?+

Open the directions link to navigate to 39.38832, -76.44688 in Google Maps. The nearest road is Red Trail.

More rockhounding in Maryland

See all 38 Maryland spots →

Open White Marsh on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.