Twin Springs: Agate & Jasper Rockhounding in Malheur County, Oregon
- Minerals reported
- 6
- Elevation
- 3,120 ft
- Best months
- February to June
Twin Springs is a mapped rockhounding spot in Malheur County, Oregon. Reported finds include agate, jasper, petrified wood, chalcedony, calcite, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.
Plan your visit
Confirm rules before collecting
- County
- Malheur County
- State
- Oregon
- Nearest road
- Dry Creek Road
- Coordinates
- 43.60190, -117.41080
Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.
Land & collecting status
Confirm rules before collecting
Land status here is not confirmed. Verify with the managing agency before collecting, federal, state, and tribal rules differ.
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 Twin Springs
Comfortable months (45 to 90°F highs)
Best months: February to June. Typical highs run 92°F in midsummer and 37°F in midwinter, with winter lows near 19°F.
Climate normals: NOAA 1991-2020 monthlies, OWYHEE DAM station (9 mi away), adjusted for elevation.
Geology at Twin Springs
This spot sits on Oregon-Idaho Graben, mapped as basalt flows, black, gray, basaltic andesite flows, and gray; plagioclase hypersthene olivine phenocrysts; mineralogy: hypersthene olivine that formed roughly 23 to 5 million years ago. Volcanic rock like this is classic geode and thunderegg country: gas cavities in the old flows can line themselves with quartz or agate over time.
- Mapped unit
- Oregon-Idaho Graben
- Age
- 23–5 Ma (Miocene)
- Rock types
- basalt flows, black, gray, basaltic andesite flows, and gray; plagioclase hypersthene olivine phenocrysts; mineralogy: hypersthene olivine
- Elevation
- 3,120 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.
Today's weather
Is today a good day to go?
The app shows live weather, recent rain, and a daily rockhounding score for Twin Springs.
Get the appSources & 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 Twin Springs
Each name 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 Twin Springs.
- Twin Springs CampgroundMalheur County, Oregon · 1 mi away
- Twin SpringsMalheur County, Oregon · 6 mi awayAgate, Jasper, Geode
- Negro Rock Petrified WoodMalheur County, Oregon · 7 mi awayPetrified Wood, Common Opal
- Haystack ButteMalheur County, Oregon · 11 mi awayJellybean Jasper, Agate, Petrified Wood
- Succor Creek State Natural AreaMalheur County, Oregon · 18 mi awayThunderegg
- Succor Creek General AreaMalheur County, Oregon · 23 mi awayAgate, Chalcedony, Chert
- RockvilleMalheur County, Oregon · 24 mi awayOpalized Wood, Agatized Wood, Chalcedony
- Warm Springs Reservoir - Site 4Malheur County, Oregon · 37 mi awayAgate, Plume Agate, Jasper
Across the state line from Twin Springs
Twin Springs 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.
- Graveyard PointOwyhee County, Idaho · 20 mi awayPlume Agate, Moss Agate, Agate
- HomedaleOwyhee County, Idaho · 20 mi awayAgate, Plume Agate
- Succor CreekOwyhee County, Idaho · 23 mi awayRed Agate, Green Agate
- Homedale (area)Owyhee County, Idaho · 31 mi awayAgate, Petrified Wood
- McBride CreekOwyhee County, Idaho · 31 mi awayPetrified Wood
- Little Squaw CreekOwyhee County, Idaho · 32 mi awayFire Opal
Twin Springs FAQ
Where is Twin Springs?+
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More rockhounding in Oregon
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