FossilCA
Ucmp B7266
Fossil collection site in the Siesta, Contra Costa County, California. Environment: lacustrine indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsRockhounding sites near Oakland
24 rockhounding collecting sites within about 100 miles of Oakland, California.
This page lists 24 natural rockhounding sites near Oakland, California, sorted by distance within about 100 miles.
Where can you collect near Oakland?
Near Oakland, California, our directory maps 24 natural rockhounding sites within about 100 miles of the city center — including 3 agate & jaspers, 14 fossilss, and 7 others. The closest mapped spot is Ucmp B7266 (6 mi straight-line). Distances are not drive time; open each listing for directions, fee notes, access rules, and safety context before you travel.
At a glance — rockhounding sites near Oakland
| Central place | Oakland, California |
|---|---|
| Search radius | About 100 miles |
| Mapped spots | 24 |
| Closest listing | Ucmp B7266 (6 mi) |
| Specimen types | Agate & Jasper (3), Fossils (14), Other (7) |
| Typical fees | 24 varies |
All rockhounding sites near Oakland
24 rockhounding collecting sites in California, sorted by distance from the city center. For live GPS sorting, use rockhounding sites near me.
ChalcedonyCA
Unnamed Location (chalcedony/curtisite)
Unnamed Location (Chalcedony/Curtisite) is a documented mineral occurrence near CA. Reported specimens include Chalcedony, Curtisite. Verify land access and collecting rules before visiting.
View detailsFossilCA
San Leandro Dam N
Fossil collection site in the Temblor, Alameda County, California. Environment: marine indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsFossilCA
San Pablo Dam
Fossil collection site in the Briones, Contra Costa County, California. Environment: marine indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View details
DiabaseCA
Fort Point Area
Fort Point Area is a documented mineral occurrence near CA. Reported specimens include Diabase, Datolite, Basalt, Apophyllite, Aragonite. Verify land access and collecting rules before visiting.
View detailsFossilCA
Bellshire
Fossil collection site in the Orinda, Contra Costa County, California. Environment: terrestrial indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsAgateCA
Unnamed Location (spherulitic Chert)
Unnamed Location (Spherulitic Chert) is a documented mineral occurrence near CA. Reported specimens include Spherulitic Chert. Verify land access and collecting rules before visiting.
View detailsFossilCA
Walnut Creek
Fossil collection site in the Briones, Contra Costa County, California. Environment: marine indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsAgateCA
Coyote Point
Coyote Point is a documented mineral occurrence near CA. Reported specimens include Chert, Jasper. Verify land access and collecting rules before visiting.
View detailsFossilCA
Union Oil Tank Farm
Fossil collection site, Contra Costa County, California. Environment: terrestrial indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsFossilCA
Ucla Loc. 6001
Fossil collection site in the Martinez, Contra Costa County, California. Environment: marine indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsFossilCA
Ucmp 1412, Pine Canyon
Fossil collection site, Contra Costa County, California. Environment: marine indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsFossilCA
Uw 1074a - Martinez
Fossil collection site in the Martinez, Contra Costa County, California. Environment: offshore. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsFossilCA
Uw 1075 - Martinez
Fossil collection site in the Martinez, Contra Costa County, California. Environment: offshore. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsFossilCA
Sycamore Creek
Fossil collection site in the Diablo, Contra Costa County, California. Environment: terrestrial indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsFossilCA
Guthrie Quarry
Fossil collection site in the Briones, Contra Costa County, California. Environment: marine indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsFossilCA
Uw 260a - Benicia
Fossil collection site in the Martinez, Solano County, California. Environment: offshore. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsAzuriteCA
Black Point
Black Point is a known mineral occurrence in Contra Costa, California, documented by the USGS Mineral Resources Data System. Reported specimens include Azurite, Chrysocolla, Cinnabar, Copper, Malachite.
View detailsChromiteCA
Crystal Springs Reservoir
Crystal Springs Reservoir is a documented mineral occurrence near CA. Reported specimens include Chromite. Verify land access and collecting rules before visiting.
View detailsAzuriteCA
Mitchell Canyon
Mitchell Canyon is a known mineral occurrence in Contra Costa, California, documented by the USGS Mineral Resources Data System. Reported specimens include Azurite, Chrysocolla, Copper, Malachite.
View detailsFossilCA
Uc 716 Mount Diablo
Fossil collection site, Contra Costa County, California. Environment: marine indet.. Source: Paleobiology Database (PBDB), CC BY 4.0.
View detailsAzuriteCA
Eagle Peak
Eagle Peak is a known mineral occurrence in Contra Costa, California, documented by the USGS Mineral Resources Data System. Reported specimens include Azurite, Chrysocolla, Copper, Malachite.
View detailsAzuriteCA
Mount Zion Copper Company
Mount Zion Copper Company is a known mineral occurrence in Contra Costa, California, documented by the USGS Mineral Resources Data System. Reported specimens include Azurite, Chrysocolla, Copper, Gold, Malachite, Silver.
View detailsAzuriteCA
Brssi & Land Mag Co
Brssi & Land Mag Co is a mineral prospect in Contra Costa, California, documented by the USGS Mineral Resources Data System. Reported specimens include Azurite, Chrysocolla, Copper, Malachite.
View detailsTypes of rockhounding sites near Oakland
Browse by specimen type in California — each link opens the full state directory for that category.
Agate & Jasper (3)
Where to find agates and jasper in the U.S. — Lake Superior beaches, Ellensburg blue, Wyoming Sweetwater fields, Texas Terlingua, Mojave desert beds, and colorful chalcedony shorelines.
Fossils (14)
Trilobites, brachiopods, petrified wood, and other paleontological collecting on public land.
Other (7)
Mixed or specialty collecting — zeolites, fluorescent minerals, thundereggs, and unique regional finds.
Natural collecting sites in the Oakland area
Oakland is a practical launch point for day trips to natural rockhounding sites in California. Within about 100 miles you will find 24 mapped destinations in our directory, starting with Ucmp B7266 about 6 mi from the city center.
The mix spans agate & jasper, fossils, other — related terms searchers use include creek gravel collecting, desert washes, road cuts, and field collecting.
How distances work near Oakland
Every card on this page is a verified directory entry in California with map coordinates. We measure straight-line distance from the Oakland city center — not driving time. A creek rockhounding site 12 miles away on forest roads can take longer than a river access point 20 miles away on a highway.
Field collecting near Oakland includes informal gravel bars, dry washes, quarry faces, and developed park collecting areas. Rules, fees, and seasonal access differ by land manager. Never assume collecting is allowed without checking the listing and posted signs the day you visit.
Safety and field conditions near you
Field conditions near Oakland change after rain, snowmelt, and summer heat. Unstable slopes, heat exhaustion, loose rock, and flash floods are real risks at creek and quarry rockhounding sites — most sites have no supervision. Check weather and local advisories before you start digging.
We publish original planning copy, safety tips, and last-updated dates on each listing. See our editorial policy for sourcing standards, or contact us if access or conditions have changed.
Rockhounding sites near Oakland — FAQ
Where can you collect near Oakland?
Near Oakland, California, our directory lists 24 natural rockhounding sites within about 100 miles — mainly 3 agate & jaspers, 14 fossilss, and 7 others. Each listing links to directions, fee notes, and safety context. Use near me on your phone for live distance sorting from your location.
How many rockhounding sites are near Oakland, California?
This page shows 24 mapped rockhounding collecting sites within about 100 miles of Oakland. The full California directory may list additional holes farther out or awaiting coordinates. Counts update as we verify new listings.
What is the closest rockhounding site to Oakland?
The closest mapped spot to Oakland is Ucmp B7266 (6 mi straight-line). Open that listing for driving directions, access notes, and current fee information — unofficial holes can change without notice.
Are rockhounding sites near Oakland free?
24 have variable or unverified fees. Open each spot page for current fee details.
What types of rockhounding sites are near Oakland?
Near Oakland, documented specimen types include agate & jaspers, fossilss, others. A rockhounding site is a natural outcrop, wash, or creek gravel bar — not a fee dig or shop. Filter by type on the California state page or open each card for specimen and access details.
When is the best time to visit rockhounding sites near Oakland?
Late spring through early fall is the usual field season near Oakland, but snowmelt, drought, and weekend crowds change conditions week to week. Check each listing before you drive — storms can make washes and creek banks unsafe.
Is it safe to collect near Oakland?
Field collecting near Oakland carries real risks: unstable slopes, heat, loose rock, and no rangers at most unofficial sites. Check weather and posted warnings the day you visit. Read our rockhounding safety basics guide and each listing's safety section before you dig.
Listing data last updated across spots on this page.