Harris Beach State Park: Agate & Jasper Rockhounding in Curry County, Oregon

Quick details

Access

Public area

County

Curry County

State

Oregon

Nearest road

Pacific Heights Road

Postcode

97415

Coordinates

42.06853, -124.31483

Geology at Harris Beach 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. Sedimentary beds like these are the typical host for petrified and silicified wood, which weathers out as durable float on slopes and in washes.

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

40 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 Harris Beach State Park

Conditions here are workable year-round, with typical highs from 56°F in winter to 70°F in summer.

Climate normals: NOAA 1991-2020 monthlies, BROOKINGS station (2 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 Harris Beach State Park

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

• AgateEncyclopedia →
• JasperEncyclopedia →
• Petrified WoodEncyclopedia →