Unlike most other sedimentary ore metals, uranium forms small orebodies, which is in keeping with its low crustal abundance. As a consequence, it is a more exploration-intensive metal than the others described in this book. We have seen that deposits of Fe and Mn are vast, with reserves in single deposits as high as 109 tons of metal. For U, the largest deposits have 2 × 105 tons; the largest U.S. deposit (at Grants, New Mexico) has only 45,000 tons of U3O8 (Cheney 1981, table 4).
KeywordsBlack Shale Crevasse Splay Redox Interface Alum Shale Iron Disulfide
Unable to display preview. Download preview PDF.