Alfred Loeb State Park: Quartz & Jasper Rockhounding in Curry County, Oregon

Updated August 2026

Alfred Loeb State Park is a mapped rockhounding spot in Curry County, Oregon. Reported finds include quartz, jasper, agate. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Curry County
State: Oregon
Nearest road: North Bank Chetco River Road
Coordinates: 42.11210, -124.18551

Geology at Alfred Loeb State Park

This spot sits on Yolla Bolly Terrane; Dothan Formation, mapped as graywacke, fossils: well-preserved buchia piochii fossils; veins: small calcite and quartz, mudstone, and sandstone that formed roughly 200 to 66 million years ago. Tough silica like agate, jasper, and chert typically weathers out of beds like these and collects as float in drainages and on deflation surfaces.

Mapped unit: Yolla Bolly Terrane; Dothan Formation
Age: 200–66 Ma (Jurassic to Cretaceous)
Rock types: graywacke, fossils: well-preserved buchia piochii fossils; veins: small calcite and quartz, mudstone, and sandstone
Elevation: 90 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Alfred Loeb State Park

Conditions here are workable year-round, with typical highs from 56°F in winter to 69°F in summer.

Climate normals: NOAA 1991-2020 monthlies, BROOKINGS station (7 mi away).

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.

State guidance last verified: April 1, 2026

BLM Oregon/Washington — Rockhounding & mineral material
Oregon Department of Geology and Mineral Industries (DOGAMI)
Oregon Parks and Recreation Department — beach collecting rules
Community submissions reviewed against published agency rules

Found at Alfred Loeb State Park

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

Nearby rockhounding spots

Other rockhounding spots within driving distance of Alfred Loeb State Park.

Across the state line from Alfred Loeb State Park

Alfred Loeb State Park is close enough to the Oregon border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Alfred Loeb State Park FAQ

Where is Alfred Loeb State Park?+

Alfred Loeb State Park is in Curry County, Oregon, at 42.11210, -124.18551. Nearest road: North Bank Chetco River Road.

What rocks and minerals can you find at Alfred Loeb State Park?+

Alfred Loeb State Park is reported to produce Quartz, Jasper, Agate.

Is collecting allowed at Alfred Loeb State Park?+

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.

What tools should I bring to Alfred Loeb State Park?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Alfred Loeb State Park?+

Alfred Loeb State Park is workable year-round.

How do I get to Alfred Loeb State Park?+

Open the directions link to navigate to 42.11210, -124.18551 in Google Maps. The nearest road is North Bank Chetco River Road.

More rockhounding in Oregon

See all 177 Oregon spots →

Open Alfred Loeb State Park on the map

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