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Uranium Deposits

Uranium Deposits. States with mineable resources. States currently producing U 3 O 8. Geography of U Deposits – USA. Geography of major U Deposits – USA. North Dakota’s Uranium Deposits. Sedimentary Host Rocks . Sandstones and Arkoses Porous Permeable Lower pH than incoming water

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Uranium Deposits

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  1. Uranium Deposits

  2. States with mineable resources States currently producing U3O8 Geography of U Deposits – USA

  3. Geography of major U Deposits – USA

  4. North Dakota’s Uranium Deposits

  5. Sedimentary Host Rocks • Sandstones and Arkoses • Porous • Permeable • Lower pH than incoming water • Coal and lignite beds • Also have low pH compared to inflowing water

  6. Sedimentary-hosted Uranium Deposits Very high tonnage but lower grade (compared to unconformity type) U transported by ground water U deposited as water encounters a reducing environment (organic matter or gas, sulfide minerals) Drop in pH results in precipitation of U minerals in pore spaces.

  7. Prerequisites for a Sedimentary-hosted Uranium deposit Source of U Coarse sands with good porosity and permeability Ground water flow (naturally oxygenated) – ideally channelized, high rate of flow Reduction zone – heavy minerals, decaying organic matter

  8. Uranium Deposit host RocksWasatch Formation - PRB

  9. Fort Union Formation - PRB

  10. Wind River Formation, Puddle Springs Member – Gas Hills

  11. Wind River FormationShirley Basin

  12. Battle Spring FormationGreat Divide Basin

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