SOLUTION-COLLAPSE BRECCIA PIPE U

SOLUTION-COLLAPSE BRECCIA PIPE U DEPOSITS MODEL 32e; Finch, 1992)

Deposit geology

These deposits consist of pipe-shaped breccia bodies formed by solution collapse and contain uraninite, and associated sulfide and oxide minerals of Cu, Fe, V, Zn, Pb, Ag, As, Mo, Ni, Co, and Se with high acid-generating capacity.
Ore minerals are restricted to the near-vertical breccia pipe and surrounding ring fracture zone. Host rocks include limestone and calcareous sandstone, both with high acid-buffering capacity.