Where to Find Chalcedony in Oregon
Oregon chalcedony is famous for the Holley blue agate of Linn County, a translucent gray-blue chalcedony from the Holley pegmatite area east of Lebanon. The Lakeview region in Lake County yields pink and apricot chalcedony rosettes in basalt, and the Owyhee plateau on the Oregon-Idaho border produces the heavy blue chalcedony nodules that hold the famous Owyhee blue agate banding. Coast pebbles from Agate Beach to Coos Bay add tide-worn carnelian and white chalcedony. Most inland chalcedony is float on rhyolite or basalt slope wash, and the better material concentrates in dry washes after spring rains.
Spot list checked against source data on April 1, 2026.
Map of 22 chalcedony collecting spots in Oregon
Standout chalcedony spots in Oregon
Hand-picked from the full list below, with the reason each one earns a trip.
Warm Springs Reservoir
Harney County
The high desert around Warm Springs Reservoir, on the Malheur River southeast of Burns, exposes weathered volcanic ground that yields agate, jasper, and petrified wood across public BLM land.
Agate Beach
Lincoln County
Agate Beach is named for the agates found along the Newport and Yaquina Head shoreline, and Oregon Sea Grant notes that winter storms expose the gravel beds that supply beach agates.
Beach Area Yachats
Lincoln County
The Yachats beach area sits on Oregon's central coast, where storm-reworked gravel can expose agate, chalcedony, jasper, and related beach material.
Succor Creek General Area
Malheur County
Succor Creek is a remote canyon locality where Oregon State Parks identifies a haven for rock hounds and DOGAMI lists agate, jasper, and related chalcedony-family material from the area.
Best counties for chalcedony in Oregon
Ranked by the number of mapped chalcedony spots. County links open the full rockhounding page for that county.
Every chalcedony spot we track in Oregon
Sorted by county. Coordinates open in Google Maps.
Before you go
Read the chalcedony identification guide so you know what a keeper looks like in the field: Chalcedony in the encyclopedia.
Chalcedony in Oregon FAQ
Where can you find chalcedony in Oregon?+
How many chalcedony spots are mapped in Oregon?+
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Where else to find chalcedony
More minerals to hunt in Oregon
Hunt chalcedony in Oregon with the map in your pocket
RockHoundR puts these spots on an offline map with BLM and Forest Service overlays, geology layers, and a log for your finds.
