Rockhounding in San Bernardino County, California

8 mapped rockhounding spots in San Bernardino County. Most commonly produces jasper, blue agate, chalcedony, aphthitalite.

San Bernardino County rockhounding photos

Representative spot and material photos from this county, shown where verified public image records are available.

2 photos

Minerals reported in San Bernardino County

Jasper4
Blue Agate2
Chalcedony2
Aphthitalite1
Bentonite1
Boltwoodite1
Borax1
Calcite1

Standout in San Bernardino County

Hand-picked spot in San Bernardino County, chosen for unusual mineralogy or documented public access. Each card opens the full coordinates and access notes.

Top pick
Afton Canyon
Public
San Bernardino County
Afton Canyon pairs documented BLM rockhounding access with a strong Mojave silica suite: Mindat lists opal, opalite, chalcedony, plume agate, agate-jasper, petrified wood, and jasper in the canyon area. The locality also has unusual field context because the Mojave River flows above ground here year-round, cutting through one of the region's more recognizable volcanic and sedimentary exposures.
Opalite, Jasper

Spots in San Bernardino County

Spot	Minerals	Coordinates	Access
Afton CanyonMojave Road	Opalite Jasper	35.0391, -116.3853	Public
Amboy CraterAmboy Crater Trail	Boltwoodite Jasper Obsidian	34.5448, -115.7924	Public
Bristol Dry Lake	Celestite Concretions	34.4622, -115.6739	Public
Eagle Crags	Blue Agate Bentonite Calcite Chalcedony Jasper	35.4146, -117.0552	Public
Lead Pipe Spring AreaLead Pipe Spring Road	Blue Agate Chalcedony Jasper Opal Thundereggs	35.4665, -117.1665	Public
Midway Area (Lavic Jasper)Barstow and Mojave Freeway	Lavic Jasper	35.0325, -116.4714	Public
Searles Lake	Borax Aphthitalite Halite Hanksite	35.7316, -117.3294	Public
Wingate PassWingate Pass Road	Sagenite Agate	35.7372, -117.0525	Public

Neighboring counties in California

Adjacent rockhounding counties, ranked by how close their centroids sit to San Bernardino County. A natural extension if San Bernardino County is already on your trip plan.

San Bernardino County FAQ

Where can I rockhound in San Bernardino County, California?+

RockHoundR tracks 8 rockhounding spots in San Bernardino County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in San Bernardino County?+

Spots in San Bernardino County most often produce Jasper, Blue Agate, Chalcedony, Aphthitalite, Bentonite. Individual spots can vary widely.

Are these San Bernardino County rockhounding spots on public land?+

Most spots in this list are tagged public, but access can change with seasons, claims, and local closures. Always verify before driving out — links in the app open the right BLM, USFS, or county pages.

Plan a San Bernardino County rockhounding trip

Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.