Mt. Pisgah: Agate & Calcite Rockhounding in Lane County, Oregon

Quick details

Access

Permission required

County

Lane County

State

Oregon

Nearest road

Trail #6

Postcode

97455

Coordinates

44.00567, -122.96454

Geology at Mt. Pisgah

This spot sits on ground mapped as Little Butte Volcanics; Mt. Tom that formed roughly 34 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

Little Butte Volcanics; Mt. Tom

Age

34–23 Ma (Oligocene)

Elevation

1,510 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.

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: April 1, 2026

• 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 Mt. Pisgah

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

• AgateEncyclopedia →
• CalciteEncyclopedia →
• Heulandite
• JasperEncyclopedia →
• MalachiteEncyclopedia →
• Mesolite
• QuartzEncyclopedia →