Where: England · Europe · approx. 53.34, -1.8 (vicinity only)
Why this spot: Carboniferous
What turns up: Blue John fluorite, calcite and Derbyshire minerals
Access: Permission required.
Blue John is protected and worked only at Blue John Cavern / Treak Cliff; NO collecting of Blue John in situ. Buy worked pieces.
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.