Where: Michigan · North America · approx. 47.24, -88.45 (vicinity only)
Why this spot: Precambrian
What turns up: Native copper, silver, datolite nodules and epidote on old mine rock piles
Access: Permission required.
Old mine dumps are mostly private; several charge a fee or require permission (e.g. Caledonia, Delaware).
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.