Where: China · Asia · approx. 40.28, 123.28 (vicinity only)
Why this spot: Rockhounding locality: serpentine/nephrite deposit
What turns up: serpentine jade, nephrite
Access: Gray area.
Serpentine/nephrite jade is commercially mined at Xiuyan; river-pebble collecting is informal with no formal public access.
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.