Where: California · North America · approx. 36.05, -120.62 (vicinity only)
Why this spot: Cretaceous
What turns up: Benitoite (blue), neptunite, natrolite
Access: Open / legal.
Private fee-dig mine; only public benitoite source, keep finds.
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.