Alteration characteristics of the sandstone-type uranium deposit in Qianjiadian, Inner Mongolia

Basin-related uranium mineral systems in Australia: A review of critical features

“…Carbon isotope analysis of shows that the carbonate is isotopically light (average ∂ 13 C = − 1.5‰ for dolomite in Henry Basin, Utah; Northrop and Goldhaber, 1990; and ∂ 13 C = − 6.8‰ for calcite at the Qianjiadia deposit in Inner Mangolia; Dong et al, 2005) indicating that the source of carbon was organic produced by anaerobic bacteria. At the Qianjiadia deposit, Dong et al (2005) do not rule out the possibility that carbonate was formed from the migration of oil and gas-bearing water. This carbonate is much lighter than the diagenetic carbonate (with average ∂ 13 C = −0.87‰) observed in the sandstone.…”

“…Sandstones near redox zones in sandstone-hosted uranium deposits often contain calcite cement (Dong et al, 2005;Langen and Kidwell, 1961). Carbon isotope analysis of shows that the carbonate is isotopically light (average ∂ 13 C = − 1.5‰ for dolomite in Henry Basin, Utah; Northrop and Goldhaber, 1990; and ∂ 13 C = − 6.8‰ for calcite at the Qianjiadia deposit in Inner Mangolia; Dong et al, 2005) indicating that the source of carbon was organic produced by anaerobic bacteria.…”

“…This carbonate is much lighter than the diagenetic carbonate (with average ∂ 13 C = −0.87‰) observed in the sandstone. Diagenetic carbonate is isotopically similar to sedimentary carbonates (Dong et al, 2005).…”

Micro-XRF Analysis On The Relationship Between Pyrite And Uranium Mineralization In Sandstone-Hosted Uranium Deposits

“…The deposit currently produces approximately 0.0379 % of the average ore grade (6.4 kg /m 2 ). 4,5 The metal distribution of the ore sample has been examined in different vein locations using chemical analyses of the major and trace elements in the bulk sample. 6,7 These studies have shown that uranium minerals and pyrite (FeS2) have a close symbiotic relationship, although variations exist between different veins.…”