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Tongbei, China

ROCKHOUNDING GRAY AREA INFERRED

Where: China · Asia · approx. 23.95, 117.28 (vicinity only)

Why this spot: Rockhounding locality: basalt vugs/vein

What turns up: babingtonite, prehnite, stilbite, epidote, calcite

Access: Gray area.

Rural quarries; collecting occurs informally through local diggers.

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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.