A red-bed deposit of Cu, V, Co, Ni, U, that has weathered in proximity with saltwater.
Refs.:
- Article in the Russell Society newsletter (2000).
- “The uranium-thorium and rare earth element geochemistry of reduction nodules from Budleigh Salterton, Devon” (University of Bristol).
Proceedings of the Ussher Society, 8 (1994), 214-218.