Priday Agate Beds: Agate & Chalcedony Rockhounding in Jefferson County, Oregon
Updated June 2026
Priday Agate Beds is a mapped rockhounding spot in Jefferson County, Oregon. Reported finds include agate, chalcedony, jasper, opal, thundereggs. Below: coordinates, access notes, nearby spots, and trip-planning links.
Priday Agate Beds photos
Public image records connected to this spot or its reported material.
Map showing Priday Agate Beds in Jefferson County, Oregon
Quick details
- Access
- Paid / fee dig
- County
- Jefferson County
- State
- Oregon
- Nearest road
- Northeast Pony Butte Road
- Coordinates
- 44.73734, -120.90733
Geology at Priday Agate Beds
This spot sits on John Day/Clarno Group; John Day Formation, mapped as ash-flow tuff and na sanidine quartz oligoclase phenocrysts that formed roughly 56 to 23 million years ago. Volcanic ground like this is where agate, jasper, and other chalcedony typically form, filling old gas pockets and fracture seams in the flow rock.
- Mapped unit
- John Day/Clarno Group; John Day Formation
- Age
- 56–23 Ma (Eocene to Oligocene)
- Rock types
- ash-flow tuff and na sanidine quartz oligoclase phenocrysts
- Elevation
- 2,860 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 Priday Agate Beds
Best months: February to November. Typical highs run 88°F in midsummer and 43°F in midwinter, with winter lows near 26°F.
Climate normals: NOAA 1991-2020 monthlies, ANTELOPE 6 SSW station (9 mi away), adjusted for elevation.
Land & collecting status
Pay-to-dig site
This is a fee-dig location. Hours, prices, and what you can keep vary by operator. Call ahead before driving out.
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:
- 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 Priday Agate Beds
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 Priday Agate Beds.
- Richardson's Rock RanchJefferson County, Oregon · 3 mi awayThundereggs
- Polka Dot Agate MineJefferson County, Oregon · 4 mi awayPolka Dot Agate, Thundereggs
- WillowdaleJefferson County, Oregon · 5 mi awayAgate, Chalcedony, Geode
- AshwoodJefferson County, Oregon · 8 mi awayAgate, Chalcedony, Geode
- AntelopeWasco County, Oregon · 14 mi awayAgate, Chalcedony, Geode
- John Day River & StreamsWasco County, Oregon · 23 mi awayFossilized Ferns
- Harvey CreekCrook County, Oregon · 25 mi awayThundereggs
- Lucky Strike MineCrook County, Oregon · 25 mi awayThundereggs
Across the state line from Priday Agate Beds
Priday Agate Beds 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.
Priday Agate Beds FAQ
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More rockhounding in Oregon
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