Igneous phosphate rocks contain less uranium than sedimentary rocks
the verdict
SUPPORTED
the evidence backs this
confidence 86/100
Geochemical analyses confirm that igneous phosphate rocks contain significantly lower uranium concentrations than sedimentary phosphate rocks due to distinct formation and enrichment processes.
Evidence for · 2
The geochemistry of uranium in apatite and phosphorite
1957 · cited by 46
Paper 0 establishes that primary igneous apatite typically contains 0.001 to 0.01 percent uranium, whereas sedimentary marine apatite contains 0.005 to 0.02 percent and can reach up to 0.1 percent.
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More for · 1
‘Co-evolution’ of uranium concentration and oxygen stable isotope in phosphate rocks
2020 · cited by 24
Paper 1 explicitly reviews uranium levels in various phosphate rocks and confirms that uranium concentrations in igneous phosphate rocks are significantly lower compared to sedimentary phosphate rocks.