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Green Springs Mt.: Agate Nodules & Carnelian Rockhounding in Jackson County, Oregon

Updated June 2026

Green Springs Mt. is a mapped rockhounding spot in Jackson County, Oregon. Reported finds include agate nodules, carnelian, chalcedony, jasper. Below: coordinates, access notes, nearby spots, and trip-planning links.

Map showing Green Springs Mt. in Jackson County, Oregon

Quick details

Access
Permission required
State
Oregon
Nearest road
32-3-32.1

Geology at Green Springs Mt.

This spot sits on Little Butte Volcanics; Roxy Formation, mapped as andesite flows, gray, basalt flows, gray; coarse to fine, plagioclase phenocrysts; zones: locally vesicular, and basaltic andesite flows that formed roughly 34 to 5 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
Little Butte Volcanics; Roxy Formation
Age
34–5 Ma (Oligocene to Miocene)
Rock types
andesite flows, gray, basalt flows, gray; coarse to fine, plagioclase phenocrysts; zones: locally vesicular, and basaltic andesite flows
Elevation
4,650 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 Green Springs Mt.

Best months: April to October. Typical highs run 79°F in midsummer and 36°F in midwinter, with winter lows near 23°F.

Climate normals: NOAA 1991-2020 monthlies, HOWARD PRAIRIE DAM station (9 mi away).

Land & collecting status

Permission required before collecting

Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.

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:

Found at Green Springs Mt.

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 Green Springs Mt..

Across the state line from Green Springs Mt.

Green Springs Mt. 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.

Green Springs Mt. FAQ

Where is Green Springs Mt.?+
Green Springs Mt. is in Jackson County, Oregon, at 42.13169, -122.51044. Nearest road: 32-3-32.1.
What rocks and minerals can you find at Green Springs Mt.?+
Green Springs Mt. is reported to produce Agate Nodules, Carnelian, Chalcedony, Jasper.
Is collecting allowed at Green Springs Mt.?+
Permission required before collecting. Requires landowner or agency permission before any collecting. Do not enter without explicit authorization. Always confirm current rules with the managing agency before a trip.
What tools should I bring to Green Springs Mt.?+
Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.
When is the best time to visit Green Springs Mt.?+
The most comfortable months at Green Springs Mt. are April to October.
How do I get to Green Springs Mt.?+
Open the directions link to navigate to 42.13169, -122.51044 in Google Maps. The nearest road is 32-3-32.1.

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