Where: California · North America · approx. 39.8, -121.45 (vicinity only)
Why this spot: Feather River canyon serpentinite yielding the jadeite-bearing 'Feather River jade'
What turns up: jadeite rock, nephrite, serpentine
Access: Gray area.
Canyon is a mix of railroad, private and forest land; collect only on open public ground.
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.