Long Beach: Agate & Chalcedony Rockhounding in Pacific County, Washington

Plan your visit

Generally open to casual rockhounding

County

Pacific County

State

Washington

Nearest road

Discovery Trail

Postcode

98631

Coordinates

46.36082, -124.06435

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

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.

Best time to visit Long Beach

Comfortable months (45 to 90°F highs)

Conditions here are workable year-round, with typical highs from 49°F in winter to 65°F in summer.

Climate normals: NOAA 1991-2020 monthlies, LONG BEACH EXP STN station (1 mi away).

Geology at Long Beach

This spot sits on ground mapped as water that formed within roughly the last 12,000 years. Tough silica like agate and jasper typically survives weathering and collects as float in drainages and gravel.

Mapped unit

water

Age

< 1 Ma (Holocene)

Elevation

0 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.

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

• Washington Geological Survey (DNR)
• Stonerose Interpretive Center, Visit & rules
• BLM Spokane District
• Community submissions reviewed against published agency rules